Platte River Trail 36 Hour
About this race
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!
Pick your distance
Running
Platte River Trail 36 Hour
Typical race-day weather
Based on 1 year of Open-Meteo archive data for this event's race dates in Casper, plus the 3 days either side.
The sun rises at 6:56 AM and sets at 6:57 PM local time (MDT) in Casper on September 25, 2026 — 12h 01m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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2026 results — Platte River Trail 36 Hour
Platte River Trail 36 Hour · 4 finishers
| Place | Name | Time | Pace |
|---|---|---|---|
| 1 | Briar Crawford | — | — |
| 2 | Richard Tenaglia | — | — |
| 3 | Vincent Ma | — | — |
| 4 | Stephanie Biffle | — | — |
Every finisher is on the results page, filterable by distance, gender and age group.
All results by year
🏃 Plan Your Next Race in Casper
Find upcoming events by distance:
- Casper 5K Races 3 races
- Casper Running Calendar 2026 5 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 5 Casper events
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