Camille Herron

Herron came from the marathon and kept its quick, short stride all the way up to multi-day racing. She won the world 100km title in 2015 and Comrades in 2017, the Tarawera trail ultra in New Zealand, and set world bests at 100 miles, 24 hours, 48 hours and six days, several of them since lowered. Few runners have been at the very top at both 100km road speed and six-day endurance.