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Hillary Bor is a two-time U.S. Olympian and seven-time national champion.

Known for his versatility, Bor has excelled on the track and the roads, with a recent shift to the half marathon. He made his debut in the distance at the 2024 United Airlines NYC Half, where he finished just off the podium in fourth. 

Since then, he has run 1:00:20 at the 2025 Houston Half Marathon, making him the sixth-fastest American in history.

Prior to moving up in distance, Bor represented Team USA in the steeplechase at both the Rio 2016 and Tokyo 2020 Olympics, finishing seventh in the former, as well as at the 2022, 2019, and 2017 World Athletics Championships.

In 2024 he added to his list of accolades, breaking his own American 10-mile record with his third straight victory at the USATF 10 Mile Road Championships in Washington, D.C., running 45:56.

Growing up in Eldoret, Kenya, he began his athletic career as a pole vaulter, long jumper, and high jumper before investing his time in the steeplechase. He attended and competed at Iowa State University, where he was an All-American, before joining the U.S. Army and gaining U.S. citizenship. The sport runs in the family, as Bor’s brothers, Emmanuel and Julius, both ran for the University of Alabama and teamed up with him to win the All-Armed Forces Cross Country Championships in 2016. He is currently a sergeant, serving at Fort Carson in Colorado Springs, Colo.