Platte River Trail 36 Hour 2026 — Casper, WY

Welcome to the Platte River Trail 36 Hour race in Casper, Wyoming. Format : Fat ass, self-support only, no fee. Course : Start at Tate Pumphouse (1775 W 1st St, Casper, WY 82604), run eastward on the Platte River Trail, turn around after 1.5 miles at Best Western Downtown (123 W E Street, Casper, WY 82601), and follow the same trail back to Tate Pumphouse. For those who attempt 100 miles, after running the 3-mile out-and-back course 33 times, an optional 1-mile out-and-back course is available on the same trail, with the turnaround at Amoco Park (1007 W 1st St, Casper, WY 82604). Time : 36 hours, from 6pm Mountain Time on Sep 25 to 6am Mountain Time on Sep 27. Size limit : 10. Race rules : Runners must register by September 24 at runsignup.com. Runners must be at least 18 years of age and sign the waiver during registration. Runners can start anytime after the official race start time. For early starts, please check with the race director. Runners can finish anytime before the official race end time, after which runners must be off course. When runners temporarily leave the course, they must reenter the race at the same spot and continue in the same direction. Runners must provide their own supplies throughout the race, including yet not limited to, water, sports drink, snacks, and food. Runners should be prepared to track their exact distance using a commonly used application (e.g. Strava, Garmin, Apple Health). Parking is at Tate Pumphouse. For any questions, please contact the race director. Happy running!