Iron Will 100 - Junction City, KS

Iron Will 100 in Junction City, Kansas offers four ultrarunning events: 100 Miler, 50 Mile, 50K, and a 36‑Hour format. The 100‑mile course is 10 out‑and‑backs on a flat river trail with about 75% shade. The 50‑mile route uses five out‑and‑backs; the 50K is a short out‑back followed by longer out‑backs totaling 31 miles.

Manned aid stations are placed every five miles, with an unmanned station at 2.5 miles if temperatures exceed 85°F. Finisher buckles are awarded for all events, the largest for the 100‑mile race, plus awards to top male and female finishers. No refunds; deferrals allowed up to 30 days before. Visit the organization's website for the most recent information.