Platte River Trail 36 Hour

September 25th 2026
Casper, WY
36 Hours

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.

Upcoming Races

Sep 25 2026
36 Hours
Multiple Loop
1 Elevation Rating
Flat or nearly flat
1 Surface Rating
Paved or very smooth surface

Results

No Past Races

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