
Platte River Trail 36 Hour is a running race on September 25–27, 2026 in Casper, WY.
From the Organizer
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:
For any questions, please contact the race director.
Happy running!
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
70°
Typical Low
42°
Based on US Climate Normals data from Casper 1sw, 1 mi from the venue.
Host City
Population
58,754
as of 2023
City Elevation
5,107 ft
Nearest Airport
CPR
Casper-Natrona County International Airport · 8 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Platte River Trail 36 Hour, put it on the calendar, and turn “someday” into a start date.
28
Days to train
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From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
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Platte River Trail 36 Hour
Sep 25, 2026