| Medal record | ||
|---|---|---|
| Women's Ultramarathon | ||
Representing  United Kingdom | ||
| IAU 100 km World Championships | ||
 | 2014 Doha | Team [1] |
 | 2014 Doha | 100 km |
| 2016 Los Alcázares | 100 km |
| IAU 50 km World Championships | ||
 | 2014 Doha | 50 km |
| 2011 Assen | 50 km |
| IAU 100 km European Championships | ||
| 2011 Winschoten | 100 km |
| 2015 Winschoten | 100 km |
Joanna Lynn Zakrzewski (known as Joasia or Jo, born 1976) [2] is an ultrarunner from Dumfries, Scotland. [3] [4] [5]
Zakrzewski is a medical doctor, and had been a race doctor and expedition medical officer before taking up ultrarunning. She has been diagnosed with relative energy deficiency in sport (RED-S). [6] [7]
In 2016, she was the first woman to win the 53.5-mile (86.1 km) Race to the King along the South Downs Way. [8]
In a race in Sydney in July 2020, she set three Scottish records: distance run in 12 hours and 24 hours, and time for 100 miles, and broke the British record for 200km. [9]
In February 2023, Zakrzewski set a world record of 255.7 miles (411.5 km) for a distance run in 48 hours, [10] although this was beaten the following month when Camille Herron ran 435.336 kilometres (270.505 mi) in the time. [11] [12]
Zakrzewski was stripped of her third position in the GB Ultras race in 2023 when it emerged that she took a car ride for a part of the race. She categorized herself as an "idiot" for accepting the award and blamed it on miscommunication as she claimed that she originally intended to withdraw from the race and hence took a car ride. [13] However, the race director, Dwayne Drinkwater, rejected these claims noting that "After the event, there was no attempt by Joasia to make us aware of what had happened and to give us an opportunity to correct the results or return the third place trophy during the course of the subsequent seven days." [4]
Zakrzewski received a one-year ban for the incident in November 2023. [14] [15] [16]
Zakrzewski qualified in medicine at the University of Cambridge ( MB BChir 1999). [17] She works as a general practitioner in Woy Woy, New South Wales, Australia. [18] [19]
An ultramarathon is a footrace longer than the traditional marathon distance of 42.195 kilometres. The sport of running ultramarathons is called ultra running or ultra distance running.
Ann Trason is an American ultramarathon runner from Auburn, California. She set 20 world records during her career. Her world record of 5:40:18 at the 50 mile distance, set in 1991, was unbeaten until 2015. As of her induction into the Ultrarunning Hall of Fame in 2020, she was considered by many to be the most successful female ultrarunner of all time.
Pamela J. Reed is an American ultrarunner who resides in Tucson, Arizona and Jackson, Wyoming.
Yiannis Kouros is a Greek ultramarathon runner based in Greece. Kouros holds or formerly held many world records between 100 miles and 1,000 miles. In 1991, he starred as Pheidippides in the movie The Story of the Marathon: A Hero's Journey, which chronicles the history of marathon running.
Multiday races are ultramarathon running events which are typically either segmented into daily events of a specified distance or time, or staged so that runners can run as far as they want, at their own discretion, over a set course or over a set number of days. Multiday races can range from continuous 48-hour track events to staged transcontinental treks.
William Morley Sichel is a British long-distance runner.
Dale Greig was a Scottish cross country champion and pioneering long-distance runner. In 1964 she became the first woman to run a marathon in under 3 hours 30 minutes. Her time of 3:27:45 at the Isle of Wight Marathon was recognised by the International Association of Athletics Federations as a world best.
One of the earliest twentieth century multiday races was the inaugural Trans-American Footrace, which took place in 1928 starting at Legion Ascot Speedway in Los Angeles and finishing in New York City in Madison Square Garden for a distance of 3,423.5 miles (5,509.6 km).
Andrew Murray is a Scottish doctor, runner and author who works for the Scottish government promoting physical activity for health. He became widely known in January 2011 when he completed a 2659-mile run from John o' Groats in far north Scotland to Merzouga, in the Moroccan Sahara desert running an average of over 34 miles for 78 consecutive days.
Ellie Greenwood is a British and Canadian ultramarathon runner. She is a four-time 100km World Champion, winning both individual and team titles in 2010 and 2014. She won the 90 km Comrades Marathon in South Africa in 2014, becoming the first British woman to win the race. Greenwood is also a former champion and course record holder for the Canadian Death Race, Western States 100, and the JFK 50 Mile Run.
Jacquelyn Camille Herron is an American ultramarathon runner and scientist. She has 12 world records in ultramarathon distances.
Elizabeth Hawker is a British endurance athlete. Her career highlights include five wins at the Ultra-Trail du Mont-Blanc (UTMB), as well as the 2006 IAU 100 km World Championships. She is a former world record-holder at the 24 hour distance. She has also worked as an oceanographer and climate change researcher.
Jasmin Karina Paris is a British runner who has been a national fell running champion and who has set records for the Bob Graham Round and the Ramsay Round. In 2024, she became the first woman to successfully complete the Barkley Marathons.
South Africans have been participated in various running events 100 kilometres and longer. Some is on road, track or trail. The statistics below show the best performances irrespective of the surface.
Donald Alexander Ferguson Ritchie was a Scottish ultramarathon runner.
John Wade Kelly is an American endurance athlete who specializes in ultrarunning.
Aleksandr “Sania” Sorokin is a Lithuanian long-distance runner who holds multiple world and European records. As of May 2023, he held seven world records on the track and road: 100 km (road), 100 miles (road), 100 miles (track), 6-hour run (track), 12-hour run (track), 12-hour run (road), 24-hour run (road). Sorokin won the IAU 24 Hour World Championship in 2019, IAU European 24 Hour Championships in 2022 and the Spartathlon in 2017.
Miho Nakata is a Japanese ultramarathon and marathon runner. She won the 2023 IAU 24 Hour World Championship and set an IAU 24-hour run world record.
Sophie Power is a British ultrarunner.
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