On October 12, 2019, Eliud Kipchoge became the world's first person to run a marathon in less than two hours (Credit: Eliud Kipchoge/Facebook)

Kenya's Eliud Kipchoge has been dominating the world marathon stage since winning the Chicago Marathon in 2014. In the years following, the elite runner has won every marathon he has participated in, including the gold medal at the 2016 Summer Olympics. In 2018, Kipchoge made history when he crossed the finish line of the Berlin Marathon in 2:01:39, crushing the existing men's world record by a minute and 18 seconds. On October 12, 2019, the 34-year-old further cemented his legacy by running the 26.2 miles in Vienna, Austria in less than two hours, faster than any other person in history. His time of 1:59:40 required him to maintain an average pace of about 4:35 per mile!