Riley Brady is an American ultrarunner based in Boulder, Colorado. They are nonbinary and compete in the women's race, and they were among the first athletes able to register under a nonbinary category at a 100-mile race in the United States.
Brady grew up in New Hope, Pennsylvania, and came to the sport without an athletics background, finishing second in their first 50K in 2014. They worked as a bike mechanic while building a racing career through the 2010s and early 2020s.
The results arrived in a run of three seasons. Brady won the Javelina Jundred in 2024 in 14:19:01, the second-fastest time in that race's history. In February 2025 they won the Black Canyon 100K in 8:16:18, taking nearly half an hour off Keely Henninger's course record of 8:45:30 from 2023.
They won the Canyons 100K by UTMB in 2026 in 9:41:09, a race they ran while ill with a virus.
Brady runs for Nike and is entered for the 2026 UTMB in Chamonix.