Eliud Kipchoge, Kenya’s star runner, broke his world record Sunday at the Berlin Marathon in Berlin. Photo: Christoph Soeder/VCG

Kipchoge crosses the finish line to win the Berlin Marathon. He clocked a time of 2:01:09, shaving 30 seconds off his previous record of 2:01:39 on the same course in 2018. Photo: Christoph Soeder/VCG

At the Tokyo 2020 Olympic Games, Kipchoge won his second consecutive gold medal in the marathon with a time of 2:08:38 on Aug. 8, 2021. Photo: Charly Triballeau/VCG

Kipchoge became the first runner to finish a marathon in under two hours on Oct. 12, 2019, in Vienna, with an unofficial time of 1:59:40. Photo: Alex Halada/VCG

Kipchoge basks in victory after winning the men’s elite race in 2:02:37 during the Virgin Money London Marathon on April 28, 2019, in London. The win marked his 10th consecutive marathon title. Photo: Karwai Tang/VCG

Members of the media film Kipchoge near the finish line after he completed the Breaking2 marathon event in Monza, Italy, in May 2017. At the event, he tried for the first time to finish the race within two hours, but missed the mark by 26 seconds. Photo: Pier Marco Tacca/VCG

From left to right, Edwin Cheruiyot Soi of Kenya, Kipchoge, and Kenenisa Bekele of Ethiopia compete in the men’s 5,000 meters final during the Beijing 2008 Olympic Games in Beijing on Aug. 23, 2008. Kipchoge won the silver medal in the event. Photo: Adam Pretty/VCG

Kipchoge celebrates with family and friends after winning the gold in the men’s marathon at the 2016 Rio Summer Olympics in Brazil on Aug. 21, 2016. Photo: Robert Beck/VCG