Ineos 1:59 Challenge

Last updated

Logo of the event INEOS 159 Challenge logo.svg
Logo of the event

The Ineos 1:59 Challenge, held on 12 October 2019, was an attempt by Kenyan athlete Eliud Kipchoge to break the two-hour mark for running the marathon distance, which he achieved in a time of 1:59:40.2. The event was specifically created for Kipchoge and held in Vienna, Austria. Kipchoge had previously attempted to run a two hour marathon at the Breaking2 event organised by Nike in 2017, but he fell short by 25 seconds. He then went on to run a world record marathon at the 2018 Berlin Marathon before British chemicals company Ineos announced the attempt in May 2019. 41 pacemakers, rotating in and out in groups of 7, assisted Kipchoge throughout the attempt.

Contents

Due to the presence of the pacemakers, delivery of hydration by bicycle, and the lack of open competition, the achievement was not eligible to be ratified as a marathon world record, and is not recognized as such by World Athletics.

Background

The sub-2 hour marathon had "afflicted the marathon since about 2011" [1] at which time the world record was 2:03:59 held by the Ethiopian Haile Gebrselassie. Gebrselassie stated in 2011 that the 2 hour mark could be broken in 20 to 25 years. Glenn Latimer, "one of the leading authorities on marathon running in the US", believed that the record would plateau around the 2:02 mark, an opinion shared by Kenyan runner Samuel Wanjiru. Extrapolating the fall in marathon world record times, Francois Peronnet of the University of Montreal predicted that the two-hour mark would be broken in 2028. [2] In 2017, The Economist reported that the average decrease in the marathon record was 8 seconds per year for the previous 50 years and 9.4 seconds per year for the previous 20 years. If the record continued to reduce at either of these rates, then the 2-hour barrier would be crossed in 2040 or 2036, respectively. It also stated that the range of peak ability was between 1:57:58 and 2:00:47. [3] A 2019 study by Simon Angus of Monash University predicted that the barrier would be crossed in May 2032 with an odds of success level of 1 in 10 and that the peak ability is 1:58:05. [4]

Breaking2

Breaking2 was a project run by sports equipment manufacturer Nike announced in December 2016 with the goal of breaking the 2-hour mark over the marathon. Three runners, Zersenay Tadese, Lelisa Desisa, and Eliud Kipchoge were to attempt the feat, assisted by a team of pacemakers, scientists, engineers, physicians and trainers. The world record at the time was held by Dennis Kimeto, set at the 2014 Berlin Marathon where he ran 2:02:57, while Kipchoge, whom Ed Caesar of Wired described as "the best marathoner in the world" had a personal best of 2:03:05. [5] Tadese and Desisa had marathon personal bests of 2:10:41 and 2:04:45, respectively, while Tadese had the fastest half-marathon best of the three at 58:23. The reason for Tadese's selection was his perceived potential based on assessments made by the support team. [6] [7]

Nike announced the race would take place at the Monza Circuit near Monza, Italy, where Kipchoge ran a half marathon personal best of 59:17 during a test event. [8] The course was 2.4 kilometres (1.5 mi) long which meant the run would consist of about 17.5 laps around the course. [9]

The attempt took place on 6 May 2017 at 5:45 a.m. Central European Time (UTC+1). [9] Groups of 6 pacemakers ran in a diamond formation around the three runners and aimed to go through every 5 kilometres (3.1 mi) in 14:13. For the first 5-kilometre section split, they were one second off the pace, going through in 14:14, and they later went through the 10 kilometres (6.2 mi) mark in 28:21. Around 50 minutes into the race, Desisa dropped out of the group before Tadese and Kipchoge went together through halfway in 59:57. Tadese soon dropped off the pace leaving Kipchoge alone to pass through 30 kilometres (19 mi) in 1:25:20 and 40 kilometres (25 mi) in 1:54:00. Falling behind the target pace, Kipchoge would need to increase his pace in order to run under 2 hours. However, he lost 10 seconds on the final lap, leaving him short of the goal by 25 seconds in a time of 2:00:25. Tadese finished in 2:06:51 and Desisa in 2:14:10 [10] [11]

Despite beating Kimetto's record of 2:02:57, Kipchoge's time could not be ratified by the IAAF (now known as World Athletics) as the attempt included the use of interchangeable pacemakers. Caesar believed that factors contributing to the failure of the attempt were the temperature and humidity on the day, which were both higher than the ideal range. [11] A 2012 study found that the ideal temperature was 4 °C (39 °F) and that a 10 °C increase resulted in a 1.4% decrease in speed, while the temperature during the attempt was 11 °C (52 °F). [3]

Events after Breaking2

Later in 2017, Kipchoge competed in the Berlin Marathon alongside the likes of Kenenisa Bekele (the defending champion), Wilson Kipsang, Vincent Kipruto, Guye Adola, Mosinet Geremew, and Felix Kandie. Kipchoge won in a time of 2:03:32, his second fastest time after his 2:03:05 performance at the 2016 London Marathon. The victory marked his 8th win out of the past 9 marathons he had competed in, excluding Breaking2. [12] Kipchoge followed this success with a victory in the 2018 London Marathon. Pacemakers were instructed to and passed through the halfway mark in 1:01:00, faster than the world record pace following splits of 13:48 and 28:19 through 5 kilometres and 10 kilometres, respectively. In the 24th mile, Kipchoge left Ethiopian Shura Kitata to win in a time of 2:04:17. [13] Kipchoge next raced in the 2018 Berlin Marathon held on 16 September 2018. He stated that his preparation was "entirely concentrated" on the race and was "confident" that he could beat his personal best. Also racing were the likes of Tadese and Kipsang. [14] Kipchoge completed the first 10 kilometres in 29:01 and the second in 28:55 before passing through the halfway mark in 61:06 before the last pacemaker soon dropped out. He then ran solo for the rest of the race, running a negative split and a 60:34 second half. He crossed the line in a world record time of 2:01:39, 78 seconds faster than Kimeto's previous world record. [15] [16] He next raced in the 2019 London Marathon in April 2019. A group of nine went through 10 kilometres (6.2 mi) in 29:01 and halfway in 61:37 before Kipchoge increased the pace and "one by one" his competitors dropped out of the group. Through the 24th mile, only Geremew managed to stay with him. Kipchoge ran the next two miles in 4:26 and 4:30 to win the race 2:02:37, while Geremew finished second in 2:02:55. This was Kipchoge's second fastest time behind his Berlin world record and also the second fastest marathon in history as well as his fourth London Marathon victory. [17]

Summary

Kipchoge at the 2018 London Marathon London Marathon 2018 (41594080862).jpg
Kipchoge at the 2018 London Marathon

On 6 May 2019, in a press release on their website, British multinational chemicals company Ineos announced that Kipchoge would be attempting a 2-hour marathon in the autumn of 2019. [18] Ineos has invested in sports ventures such as cycling team Ineos Grenadiers (bought from Sky in 2019, a team which had won 8 Grand Tours since 2012), [19] and Formula One through the part ownership and principal sponsorship of Mercedes-Benz. [20] The attempt was scheduled to take place on the 6 May 2019, the 65th anniversary of the "historic" four-minute mile by British runner Roger Bannister. [21]

Course

The attempt was to take place in the Prater, a park in Vienna, Austria. The city was chosen to host the run after an "extensive search of venues fitting Eliud's criteria" with factors such as time zone, weather, and number of spectators considered. [21] A preprint published in October 2019 claimed that the oxygen uptake on the Vienna course would "fluctuate by no more than 2% of the oxygen uptake rates on a flat, straight course" and that it would "incur a penalty of less than 5 seconds compared to a perfectly level and straight course". [22]

The attempt

Comparison of Kipchoge's speeds in Breaking2, the 2018 Berlin Marathon world record, and the Ineos 1:59 Challenge. Kipchoge's Marathon Speeds.png
Comparison of Kipchoge's speeds in Breaking2, the 2018 Berlin Marathon world record, and the Ineos 1:59 Challenge.

For the attempt Kipchoge was joined by forty-one pacemakers, [24] who rotated twice each lap and ran in a V-formation, rather than the diamond formation chosen for the previous attempt. Kipchoge was placed at the bottom of the formation with two pacemakers running behind him. [25] Each lap of the course featured two 4.3-kilometre (2.7-mile) out-and-back stretches of Hauptallee with the turning points coming at the Lusthaus and Praterstern roundabouts at either end of the avenue, in the Prater park. The entire route inclines only 2.4 metres (7.9 feet). Spectators were present for the attempt. [26]

The organizers planned to run the event on Saturday, 12 October 2019, but they had a reserve window of eight days in case of poor weather conditions. [27] The attempt was run on 12 October starting at 08:15 CET. Organizers allowed a start time between 05:00 and 09:00, but chose 08:15 to maximize viewership. The weather conditions were expected to be dry with a temperature of 9 °C (48 °F) at the start, rising to 12 °C (54 °F) at the finish. [28]

Ineos 1:59 Challenge [29] [30]
5 km splitsSplitTime
5 km14:100:14:10
10 km14:100:28:20
15 km14:140:42:34
20 km14:130:56:47
25 km14:121:10:59
30 km14:121:25:11
35 km14:121:39:23
40 km14:131:53:36
42.195 km6:041:59:40
Average 5 km14:10.8

Kipchoge completed the challenge with an official time of 1:59:40.2, an average speed of 5.88 metres per second (21.2 km/h; 13.2 mph). [31] Directly after finishing the run, Kipchoge stated: "I am feeling good. After Roger Bannister in 1954 it took another 63 years, I tried and I did not get it - 65 years, I am the first man - I want to inspire many people, that no human is limited." [32]

Accessories and optimization strategies

The organizers of the attempt added many techniques during the run which cumulatively assisted Kipchoge and the pacemakers:

The Breaking2 attempt had been held behind closed doors at Monza with just a few press and Nike employees present. Kipchoge missed the presence of a crowd there and requested that the public be allowed to attend the Ineos 1:59 Challenge. [37]

Pacemakers

A team of forty-one runners served as Kipchoge's pacemakers in the challenge. [38]

NameNotesRef(s)
Joel Ayeko Two-time World Mountain Running Championship silver medalist. [39]
Thomas Ayeko Junior silver medalist at the 2011 IAAF World Cross Country Championships [40]
Selemon Barega 2018 Diamond League champion over 5000 m [41]
Emmanuel Bett Fastest time over 10,000 metres in the 2012 season [42]
Hillary Bor Gold medalist, 3000 metres steeplechase at the 2019 USA Outdoor Track and Field Championships [43]
Matthew Centrowitz 2016 Olympic and World Indoor Champion over 1500 m [44]
Paul Chelimo Olympic and World medalist over 5000 m [45]
Augustine Choge 2006 Commonwealth Games Champion over 5000 m. Part of Eliud Kipchoge’s training group [46]
Victor Chumo Part of Eliud Kipchoge’s training group [47]
Filip Ingebrigtsen Reigning European Cross-Country champion and 2016 European 1500m Champion [48]
Henrik Ingebrigtsen 2012 European 1500m Champion [49]
Jakob Ingebrigtsen European Indoor and outdoor champion. Youngest pacemaker. [50]
Philemon Kacheran Part of Eliud Kipchoge’s training group [51]
Stanley Kebenei [52]
Justus Kimutai [53]
Shadrack Kipchirchir Silver medalist at the 2014 NCAA Outdoor Championships in the 10,000 metres [54]
Noah Kipkemboi [55]
Gideon Kipketer Part of Eliud Kipchoge’s training group [56]
Jacob Kiplimo Silver medalist, IAAF World Cross Country Championships [57]
Marius Kipserem [58]
Eric Kiptanui [59]
Moses Koech [60]
Shadrack Koech [61]
Micah Kogo Former World Record holder for 10k road run. [62]
Alex Korio [63]
Jonathan Korir [64]
Ronald Kwemoi Gold medalist, 2014 Kenyan National Championship in the 1500 metres [65]
Bernard Lagat Oldest pacemaker. Was part of the Breaking2 challenge. Beat Kipchoge to the 5000 m World title in 2007. [66]
Lopez Lomong Part of the Breaking2 attempt in 2017. [67]
Abdallah Mande [68]
Stewart McSweyn [69]
Kota Murayama [70]
Ronald Musagala [71]
Kaan Kigen Özbilen [72]
Jack Rayner [73]
Chala Regasa [74]
Brett Robinson [75]
Nicholas Rotich Part of Eliud Kipchoge’s training group [76]
Patrick Tiernan [77]
Timothy Toroitich [78]
Julien Wanders Former World Record holder for 5k road run. [79] Current European record holder for the half marathon [80] and the European record holder for the 10K run. [81]

Related Research Articles

<span class="mw-page-title-main">Marathon world record progression</span>

World records in the marathon are ratified by World Athletics, the international governing body for the sport of athletics.

<span class="mw-page-title-main">Kenenisa Bekele</span> Ethiopian long-distance runner (born 1982)

Kenenisa Bekele Beyecha is an Ethiopian long-distance runner. He was the world record holder in both the 5,000-metre and 10,000-metre from 2004 until 2020. He won the gold medal in both the 5,000 m and 10,000 m events at the 2008 Beijing Olympics. At the 2004 Olympics, he won the gold medal in the 10,000 m and the silver medal in the 5,000 m.

<span class="mw-page-title-main">Zersenay Tadese</span> Eritrean long-distance runner (born 1982)

Zersenay Tadese Habtesilase is an retired Eritrean long-distance track and road running athlete. He held the men's half marathon world record from 2010 to 2018. His bronze medal in the 10,000 metres at the 2004 Athens Olympics made him the first ever Eritrean Olympic medallist, and his 20-km title at the 2006 IAAF World Road Running Championships also made him the country's first athlete to win at a world championship event. He does not use a sprint finish to win races; his strategy relies on a combination of efficient running and fast pace setting.

<span class="mw-page-title-main">Augustine Kiprono Choge</span> Kenyan runner

Augustine Kiprono Choge is a Kenyan middle distance and long distance runner.

<span class="mw-page-title-main">Eliud Kipchoge</span> Marathon world record holder from 2018 to 2023

Eliud Kipchoge is a Kenyan long-distance runner who competes in the marathon and formerly specialized in the 5000 metres. Regarded as one of the greatest marathon runners of all time, he is the 2016 and 2020 Olympic marathon champion, and was the world record holder in the marathon from 2018 to 2023, with a time of 2:01:09 set at the 2022 Berlin Marathon, until that record was broken by Kelvin Kiptum at the 2023 Chicago Marathon with a time of 2:00:35. He has run four of the 10 fastest marathons in history.

Running economy (RE) a complex, multifactorial concept that represents the sum of metabolic, cardiorespiratory, biomechanical and neuromuscular efficiency during running. Oxygen consumption (VO2) is the most commonly used method for measuring running economy, as the exchange of gases in the body, specifically oxygen and carbon dioxide, closely reflects energy metabolism. Those who are able to consume less oxygen while running at a given velocity are said to have a better running economy. However, straightforward oxygen usage does not account for whether the body is metabolising lipids or carbohydrates, which produce different amounts of energy per unit of oxygen; as such, accurate measurements of running economy must use O2 and CO2 data to estimate the calorific content of the substrate that the oxygen is being used to respire.

<span class="mw-page-title-main">Wilson Kipsang Kiprotich</span> Kenyan long-distance runner

Wilson Kipsang Kiprotich is a Kenyan professional athlete who specialises in long-distance running, competing in events ranging from 10 km to the marathon. He was the bronze medallist in the marathon at the 2012 Summer Olympics. He is the former world record holder in the marathon with a time of 2:03:23, which he set at the 2013 Berlin Marathon. He has run under 2 hours 4 minutes for the marathon on four occasions.

<span class="mw-page-title-main">Lelisa Desisa</span> Ethiopian long-distance runner

Lelisa Desisa Benti is an Ethiopian long-distance runner who specialises in road running competitions. Desisa gained his first international medal at the 2009 African Junior Athletics Championships, where he took the 10,000 metres gold medal.

<span class="mw-page-title-main">Dennis Kipruto Kimetto</span> Kenyan long-distance runner

Dennis Kipruto Kimetto is a Kenyan long distance runner who competes in road running events. He was the world record holder in the men's marathon with a time of 2 hours 2 minutes 57 seconds, a record which he held until Eliud Kipchoge broke it in 2018 with a time of 2:01:39.

<span class="mw-page-title-main">Guye Adola</span> Ethiopian long-distance runner

Guye Adola Idemo is an Ethiopian long-distance runner who specialises in the half marathon.

<span class="mw-page-title-main">Tigst Assefa</span> Ethiopian long-distance runner (born 1996)

Tigst Assefa Tessema is an Ethiopian long-distance runner and the marathon female world record holder. She is the only woman in history to run a marathon in under two hours 12 minutes and two hours 13 minutes. She has competed in and won two top-tier World Marathon Majors, both in Berlin. A former 800 metres specialist, Tigst was the first woman to break 2:00 in the event and 2:20:00 in the marathon, and remains the only woman under 2:00 and 2:13:00, respectively.

<span class="mw-page-title-main">Breaking2</span> Project by Nike

Breaking2 was a project by Nike to break the two-hour barrier for the marathon. Nike announced the project in November 2016 and organized a team of three elite runners who trained for a private race. The event was held on the Formula One race track Autodromo Nazionale di Monza in Italy on May 6, 2017.

The 2018 Berlin Marathon was the 45th edition of the Berlin Marathon. The marathon took place in Berlin, Germany, on 16 September 2018 and was the fourth World Marathon Majors race of the year. The men's race was won by Eliud Kipchoge, who set a new world record time of 2:01:39. The women's race was won by Gladys Cherono in a time of 2:18:11.

<span class="mw-page-title-main">Brigid Kosgei</span> Kenyan long-distance runner

Brigid Jepchirchir Kosgei is a Kenyan long-distance runner who specialises in the marathon. She won the 2018 and 2019 Chicago Marathons, the 2019 and 2020 London Marathons and the 2021 Tokyo Marathon. Kosgei was the marathon world record holder for women running in a mixed-sex race, with a time of 2:14:04 achieved on 13 October 2019 at the Chicago Marathon. She won the silver medal in the marathon event at the 2020 Tokyo Olympics.

<span class="mw-page-title-main">2019 London Marathon</span> 39th running of the London marathon

The 2019 London Marathon was the 39th running of the annual marathon race in London, United Kingdom, which took place on 28 April. The elite men's race was won by Kenyan Eliud Kipchoge, who took his fourth London Marathon victory in a time of 2:02:37, the second fastest marathon ever at that point. The women's race was won by Brigid Kosgei, also of Kenya, in 2:18:20. American Daniel Romanchuk won the men's wheelchair title in 1:33:38 while Switzerland's Manuela Schär won the women's title in 1:44:09. Changes were made to the course to make it more environmentally friendly; the number of plastic bottles used was reduced and biodegradable alternatives were used instead.

<span class="mw-page-title-main">Athletics at the 2020 Summer Olympics – Men's marathon</span> Olympic athletics event

The men's marathon event at the 2020 Summer Olympics started at 07:00 on 8 August 2021 in Sapporo, Japan. 106 athletes from 46 nations competed. The previous Olympic champion, Kenyan Eliud Kipchoge, successfully defended his title, with Dutch and Belgian athletes Abdi Nageeye and Bashir Abdi gaining silver and bronze, respectively. Kipchoge was the third man to repeat as Olympic marathon champion, after Abebe Bikila and Waldemar Cierpinski. The Netherlands and Belgium earned their first men's marathon medals since 1980 and 1976, respectively.

<span class="mw-page-title-main">2019 World Athletics Championships – Men's marathon</span> Long distance running race at the 2019 World Athletics Championships

The men's marathon was one of the road events at the 2019 World Athletics Championships in Doha, Qatar. Due to the heat in Doha, the race was scheduled to begin at 23:59 on 5 October 2019. Even with the unusual timing, high temperatures were expected to provide difficult conditions for running, but in the end temperatures dropped to around 29 °C (84 °F) and 50% humidity. The race was won by Lelisa Desisa of Ethiopia in 2 h 10 min 40 s, followed four seconds behind by his compatriot Mosinet Geremew. Amos Kipruto of Kenya was third in 2:10:51.

Alex Korio is a Kenyan long-distance runner. In 2019, he competed in the men's 10,000 metres at the 2019 World Athletics Championships held in Doha, Qatar. He finished in 11th place.

<span class="mw-page-title-main">Kelvin Kiptum</span> Kenyan long-distance runner (1999–2024)

Kelvin Kiptum Cheruiyot was a Kenyan long-distance runner and the marathon world record holder when he died. As of 2024, he ran three of the seven fastest marathons in history and was ranked first among the world's men's marathon runners.

References

  1. Tucker, Ross (13 December 2017). "The sub-2 hour marathon in 2017? Thoughts on concept". sportsscientists.com. Retrieved 18 June 2023.
  2. "Could a marathon ever be run in under two hours?". BBC . 11 April 2011. Retrieved 18 June 2023.
  3. 1 2 "Can the marathon's two-hour barrier be broken?". The Economist . 4 October 2017. Retrieved 21 June 2023.
  4. Angus, Simon (November 2018). "A Statistical Timetable for the Sub–2-Hour Marathon". Medicine & Science in Sports & Exercise . 51 (7): 1460–1466. doi:10.1249/MSS.0000000000001928. PMC   6613719 . PMID   30817713 . Retrieved 21 June 2023.
  5. "Eliud Kichoge". World Athletics .
  6. Hutchinson, Alex (12 December 2016). "Nike's Audacious Plan: Break the 2-Hour Marathon Barrier in 2017". Runner's World . Retrieved 15 June 2023.
  7. Caesar, Ed (12 December 2016). "Inside Nike's Quest for the Impossible: a Two-Hour Marathon". Wired . Retrieved 4 June 2023.
  8. Hobson, Ben (8 March 2017). "Nike announce technology and location for its breaking2 attempt". Runner's World . Retrieved 15 June 2023.
  9. 1 2 Burgess, Matt (6 May 2017). "Nike's two-hour marathon: how to watch the Breaking2 event". Wired . Retrieved 15 June 2023.
  10. Mulkeen, Jon (6 May 2017). "Kipchoge a 'happy man' in Monza". IAAF . Retrieved 17 June 2023.
  11. 1 2 Caesar, Ed (6 May 2017). "Nike's Quest to Beat the Two-Hour Marathon Comes Up Oh So Short". Wired . Retrieved 17 June 2023.
  12. Mulkeen, Jon (24 September 2017). "Kipchoge holds off surprise package Adola to regain Berlin Marathon title". IAAF . Retrieved 18 June 2023.
  13. Mills, Steven (22 April 2018). "Kipchoge and Cheruiyot ensure Kenyan double at London Marathon". IAAF . Retrieved 19 June 2023.
  14. "Kipchoge targets lifetime best in Berlin". IAAF . 11 June 2018. Retrieved 19 June 2023.
  15. Francis, Anne (18 September 2018). "Kipchoge's world-record-setting Berlin marathon deconstructed". Canadian Running Magazine. Retrieved 19 June 2023.
  16. Robinson, Roger (16 September 2018). "Eliud Kipchoge Crushes Marathon World Record at Berlin Marathon". Runner's World . Retrieved 19 June 2023.
  17. Dennehy, Cathal (28 April 2019). "Kipchoge Proves He Has No Equal: Runs 2nd Fastest Marathon Time in History". Runner's World . Retrieved 21 June 2023.
  18. "Eliud Kipchoge to challenge two-hour marathon time this Autumn" (Press release). Ineos. 6 May 2019. Retrieved 21 June 2023.
  19. "Cycling News - Team Sky To Become Team Ineos As Takeover Confirmed". Eurosport . 19 March 2019. Retrieved 22 June 2023.
  20. Ahmed, Murad (18 December 2020). "Ineos becomes joint owner of Mercedes Formula One team". Financial Times . Retrieved 22 June 2023.
  21. 1 2 Middlebrook, Hailey (27 January 2019). "Vienna Named the Venue for Eliud Kipchoge's Sub-2:00 Marathon Attempt". Runner's World . Retrieved 22 June 2023.
  22. Triska, Christoph; Hoogkamer, Wouter; Snyder, Kristine; Taboga, Paolo; Arellano, Christopher J.; Kram, Rodger (9 October 2019). "The effects of course design (elevation undulations and curves) on marathon running performance: an a priori case study of the INEOS 1:59 Challenge in Vienna". SportRxiv. doi:10.31236/osf.io/xrjvb. S2CID   241564773.{{cite journal}}: Cite journal requires |journal= (help)
  23. García-Manso, JM; Martínez-Patiño, MJ; de la Paz Arencibia, L; Valverde Esteve, T (11 November 2020). "Tactical behavior of high-level male marathon runners". Scandinavian Journal of Medicine & Science in Sports. 31 (3): 523. doi:10.1111/sms.13873. PMID   33179319. S2CID   226310847 . Retrieved 13 August 2023.
  24. "Introducing Eliud Kipchoge's 41-person team of INEOS 1:59 pacers". Canadian Running Magazine. 4 October 2019. Retrieved 13 October 2019.
  25. 1 2 Burgess, Matt (14 October 2019). "The incredible science behind Eliud Kipchoge's 1:59 marathon". Wired. Retrieved 15 June 2020.
  26. "Ineos 1:59 Challenge: Eliud Kipchoge confident of breaking two-hour marathon barrier". 11 October 2019. Retrieved 12 October 2019.
  27. "The INEOS-159 challenge: Venue set for Kipchoge sub two-hour marathon attempt". Get Sweat Go. 27 June 2019. Retrieved 12 October 2019.
  28. "Kipchoge's team announce 0815 start for sub-two hour marathon attempt". Reuters. 11 October 2019. Retrieved 12 October 2019.
  29. "The incredible numbers behind Kipchoge's sub two-hour marathon". The Independent. 12 October 2019. Retrieved 12 October 2019.
  30. "INEOS 1:59 Challenge Live", YouTube , retrieved 12 October 2019
  31. "Eliud Kipchoge breaks two-hour marathon mark by 20 seconds". 12 October 2019. Retrieved 12 October 2019.
  32. Wilson, Andy (12 October 2019). "Eliud Kipchoge net worth: How much is marathon star worth as two-hour barrier is broken?". Express.co.uk. Retrieved 15 October 2019.
  33. Roe, Dan (12 October 2019). "Everything We Know About Eliud Kipchoge's Barrier-Breaking Shoes". Runner's World. Retrieved 13 October 2019.
  34. Sutcliffe, Steve (17 October 2019). "'It feels like running on trampolines' - Kipchoge & Kosgei's marathon trainers".
  35. "Why are the trainers Eliud Kipchoge wore when he broke the two-hour marathon record controversial". The Independent. 15 October 2019. Retrieved 22 October 2019.
  36. Bloom, Ben (11 October 2019). "Eliud Kipchoge's extraordinary and controversial two-hour marathon attempt - everything you need to know". The Telegraph. ISSN   0307-1235 . Retrieved 22 October 2019.
  37. Bloom, Ben (6 May 2019). "Eliud Kipchoge plans to stage second attempt at breaking two-hour marathon barrier in London later this year". The Telegraph. ISSN   0307-1235 . Retrieved 22 October 2019.
  38. "Team". www.ineos159challenge.com. Archived from the original on 15 April 2021. Retrieved 14 October 2019.
  39. "Joel Ayeko". www.ineos159challenge.com. Retrieved 12 October 2019.
  40. "Thomas Ayeko". www.ineos159challenge.com. Retrieved 12 October 2019.
  41. "Selemon Barega". www.ineos159challenge.com. Retrieved 12 October 2019.
  42. "Emmanuel Bett". www.ineos159challenge.com. Retrieved 12 October 2019.
  43. "Hillary Bor". www.ineos159challenge.com. Retrieved 12 October 2019.
  44. "Matthew Centrowitz". www.ineos159challenge.com. Retrieved 12 October 2019.
  45. "Paul Chelimo". www.ineos159challenge.com. Retrieved 12 October 2019.
  46. "Augustine Choge". www.ineos159challenge.com. Retrieved 12 October 2019.
  47. "Victor Chumo". www.ineos159challenge.com. Retrieved 12 October 2019.
  48. "Filip Ingebrigtsen". www.ineos159challenge.com. Retrieved 12 October 2019.
  49. "Henrik Ingebrigtsen". www.ineos159challenge.com. Retrieved 12 October 2019.
  50. "Jakob Ingebrigtsen". www.ineos159challenge.com. Retrieved 12 October 2019.
  51. "Philemon Kacheran". www.ineos159challenge.com. Archived from the original on 12 October 2019. Retrieved 12 October 2019.
  52. "Stanley Kebenei". www.ineos159challenge.com. Retrieved 12 October 2019.
  53. "Justus Kimutai". www.ineos159challenge.com. Archived from the original on 12 October 2019. Retrieved 12 October 2019.
  54. "Shadrack Kipchirchir". www.ineos159challenge.com. Retrieved 12 October 2019.
  55. "Noah Kipkemboi". www.ineos159challenge.com. Retrieved 12 October 2019.
  56. "Gideon Kipketer". www.ineos159challenge.com. Retrieved 12 October 2019.
  57. "Jacob Kiplimo". www.ineos159challenge.com. Retrieved 12 October 2019.
  58. "Marius Kipserem". www.ineos159challenge.com. Archived from the original on 12 October 2019. Retrieved 12 October 2019.
  59. "Eric Kiptanui". www.ineos159challenge.com. Retrieved 12 October 2019.
  60. "Moses Koech". www.ineos159challenge.com. Retrieved 12 October 2019.
  61. "Shadrack Koech". www.ineos159challenge.com. Retrieved 12 October 2019.
  62. "Micah Kogo". www.ineos159challenge.com. Retrieved 12 October 2019.
  63. "Alex Korio". www.ineos159challenge.com. Retrieved 12 October 2019.
  64. "Jonathan Korir". www.ineos159challenge.com. Retrieved 12 October 2019.
  65. "Ronald Kwemoi". www.ineos159challenge.com. Retrieved 12 October 2019.
  66. "Bernard Lagat". www.ineos159challenge.com. Retrieved 12 October 2019.
  67. "Lopez Lomong". www.ineos159challenge.com. Retrieved 12 October 2019.
  68. "Abdallah Mande". www.ineos159challenge.com. Retrieved 12 October 2019.
  69. "Stewart McSweyn". www.ineos159challenge.com. Retrieved 12 October 2019.
  70. "Kota Murayama". www.ineos159challenge.com. Retrieved 12 October 2019.
  71. "Ronald Musagala". www.ineos159challenge.com. Retrieved 12 October 2019.
  72. "Kaan Kigen Ozbilen". www.ineos159challenge.com. Retrieved 12 October 2019.
  73. "Jack Rayner". www.ineos159challenge.com. Retrieved 12 October 2019.
  74. "Chala Regasa". www.ineos159challenge.com. Retrieved 12 October 2019.
  75. "Brett Robinson". www.ineos159challenge.com. Retrieved 12 October 2019.
  76. "Nicholas Rotich". www.ineos159challenge.com. Retrieved 12 October 2019.
  77. "Patrick Tiernan". www.ineos159challenge.com. Retrieved 12 October 2019.
  78. "Timothy Toroitich". www.ineos159challenge.com. Retrieved 12 October 2019.
  79. "Joshua Cheptegei Shatters 5K World Record in Monaco". 16 February 2020.
  80. Julien Wanders (59:13) Shatters European Record; Stephen Kiprop (58:42) and Senbere Teferi (65:45) Win 2019 RAK Half
  81. "Julien Wanders". www.ineos159challenge.com. Retrieved 12 October 2019.