Runner's diarrhea, also known as runner's colitis [1] or runner's trots [2] is a condition that often affects distance runners characterized by an urgent need for a bowel movement mid-run.
The causes of runner's diarrhea remain under debate, although several theories include ischemia and mechanical trauma. The reduced incidence of diarrhea in cyclists would indicate the latter. [3] Diet is often cited as a common cause of diarrhea in distance runners, particularly with meals including berries and dried fruit. [4] [ verification needed ]
Runner's diarrhea will normally clear up by itself from several hours to two days after running. As with all forms of diarrhea, replacement of fluids and electrolytes is advisable. Methods to prevent runner's diarrhea will vary between individuals, although it is advisable to consider examining the pre-running diet to determine potential trigger foods. [5]
The marathon is a long-distance foot race with a distance of 42.195 km, usually run as a road race, but the distance can be covered on trail routes. The marathon can be completed by running or with a run/walk strategy. There are also wheelchair divisions. More than 800 marathons are held throughout the world each year, with the vast majority of competitors being recreational athletes, as larger marathons can have tens of thousands of participants.
The Boston Marathon is an annual marathon race hosted by several cities and towns in greater Boston in eastern Massachusetts, United States. It is traditionally held on Patriots' Day, the third Monday of April. Begun in 1897, the event was inspired by the success of the first marathon competition in the 1896 Summer Olympics. The Boston Marathon is the world's oldest annual marathon and ranks as one of the world's best-known road racing events. It is one of six World Marathon Majors. Its course runs from Hopkinton in southern Middlesex County to Copley Square in Boston.
Paula Jane Radcliffe MBE is a former British long-distance runner. She is a three-time winner of the London Marathon, three-time New York Marathon champion, the 2002 Chicago Marathon winner and the 2005 World Champion in the Marathon from Helsinki. She was previously the fastest female marathoner of all time, and held the Women's World Marathon Record with a time of 2:15:25 for 16 years from 2003 to 2019 when it was broken by Brigid Kosgei.
The New York City Marathon, currently branded as the TCS New York City Marathon for sponsorship reasons, is an annual marathon that courses through the five boroughs of New York City. It is the largest marathon in the world, with 53,627 finishers in 2019 and 98,247 applicants for the 2017 race. Along with the Boston Marathon and Chicago Marathon, it is among the pre-eminent long-distance annual running events in the United States and is one of the World Marathon Majors.
An ultramarathon, also called ultra distance or ultra running, is a footrace longer than the traditional marathon length of 42.195 kilometres. Various distances, surfaces, and formats are raced competitively, from the shortest common ultramarathon of 31 miles (50 km) and up to 3100 miles. World Championships are held by the International Association of Ultrarunners (IAU) for 50 km, 100 km, 24 hours, and ultra trail running. The Global Organization of Multi-Day Ultramarathoners (GOMU) holds World Championships for 48 hours and 6 days. World Records are ratified and recognized by World Athletics, the IAU, and by GOMU.
Catherine Nyambura Ndereba is a retired Kenyan marathon runner. Between 2003 and 2008, she finished in the top two in five successive global championship marathons. Ndereba has twice won the marathon at the World Championships in Athletics and won silver medals at the Summer Olympic Games in 2004 and 2008, becoming Kenya's first female multi-medalist. She is also a four-time winner of the Boston Marathon and a two-time winner of the Chicago Marathon. It was at the latter in 2001 that she broke the women's marathon world record with a time of 2:18:47.
Mebrahtom "Meb" Keflezighi (; is a retired American long distance runner. He is the 2004 Olympic silver medalist in the marathon and finished in fourth place in the 2012 Summer Olympics. He won the 2009 New York City Marathon on November 1, 2009, and the 2014 Boston Marathon on April 21, 2014, becoming the first American man to win each race since 1982 and 1983, respectively. Keflezighi is a graduate of UCLA, where he won four NCAA championships competing for the UCLA Bruins track and field team. He came in fourth in the 2014 New York City Marathon on November 2, 2014, eighth in the 2015 Boston Marathon on April 20, 2015, and second in the 2016 U.S. Olympic Team Trials to qualify for the 2016 Summer Olympics.
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.
The Dallas Turkey Trot is an annual turkey trot footrace over an 8.2 miles (13.2 km) course through the city of Dallas, Texas (USA). There is also a 5k fun run/walk. Participants may choose to register for the 5k as a timed or untimed runner.
Yohann Diniz is a French race walker. He is the current world-record holder for the 50 km race, with a time of 3:32:33, and for the 50,000 metres track walk, with a time of 3:35:27.
Kara Goucher is an American long-distance runner. She was the 10,000 meters silver medalist at the 2007 World Championships in Athletics and represented the USA at the 2008 Beijing Olympics and 2012 London Olympics. She made her marathon debut in 2008 and finished third the following year at the Boston Marathon.
Edna Ngeringwony Kiplagat is a Kenyan professional long-distance runner. She was the 2011 and 2013 World Champion in the marathon. She established herself as an elite marathon runner with wins at the Los Angeles and New York City Marathons in 2010. Her personal best for the distance is 2:19:50 hours, set at the London Marathon in 2012. At age 37, Kiplagat won the 2017 Boston Marathon in a time of 2:21:52 hours, and won the marathon silver medal at the IAAF World Championships in London. At age 39, she was second at the 2019 Boston Marathon and fourth in the event at the following World Championships. At age 41, she won the 2021 Boston Marathon, becoming the oldest-ever winner of a World Marathon Major.
Kathrine Virginia Switzer is an American marathon runner, author, and television commentator.
Roberta Louise Gibb is an American former runner who was the first woman to have run the entire Boston Marathon (1966). She is recognized by the Boston Athletic Association as the pre-sanctioned era women's winner in 1966, 1967, and 1968. At the Boston Marathon, the pre-sanctioned era comprised the years from 1966 through 1971, when women, who under AAU rules could not compete in the Men's Division, ran and finished the race. In 1996 the B.A.A. retroactively recognized as champions the women who finished first in the Pioneer Women's Division Marathon for the years 1966–1971.
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.
The 2013 Boston Marathon was the 117th running of the annual marathon race in Boston, United States, which took place on April 15, 2013. Organized by the Boston Athletic Association (B.A.A.), it hosted the second of the World Marathon Majors to be held in 2013 with over 23,000 runners participating. Lelisa Desisa won the men's race with a time of 2:10:22, and Rita Jeptoo won the women's with a time of 2:26:25. Hiroyuki Yamamoto won the men's wheelchair race in 1:25:32 and Tatyana McFadden won the women's in 1:45:25.
Lonah Korlima Chemtai Salpeter is a Kenyan-born Israeli Olympic runner. She won the bronze medal in the marathon at the 2022 World Athletics Championships. At the European Athletics Championships in the 10,000 metres, Salpeter won the gold medal in 2018, and earned a bronze medal in 2022. She won the 2020 Tokyo Marathon, won the silver medal at the 2022 New York City Marathon, and finished third at the 2023 Boston Marathon.
Geoffrey Kipkorir Kirui is a Kenyan long-distance runner who competes in cross country running competitions, track and road races up to the marathon.
The 2019 Boston Marathon was the 123rd running of the annual marathon race held in Boston, Massachusetts. It took place on April 15, 2019. The elite men's race came down to a sprint finish, which Lawrence Cherono won in 2:07:57. The elite women's race was won by Worknesh Degefa, who took an early lead and built up a large gap between herself and the other runners, in 2:23:31. The men's and women's wheelchair races were won by Daniel Romanchuk in 1:21:36 and Manuela Schär in 1:34:19, respectively.
The 2019 Chicago Marathon was the 42nd annual running of the Chicago Marathon held in Chicago, Illinois, United States on October 13, 2019. The men's race was won by Kenyan Lawrence Cherono in 2:05:45 while the women's was won by Kenyan Brigid Kosgei in 2:14:04, a world record by 81 seconds. The men's and women's wheelchair races were won by Daniel Romanchuk and Manuela Schär in 1:30:26 and 1:41:08, respectively. More than 45,000 runners completed the race.
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