Platte River Trail 36 Hour logo

Platte River Trail 36 Hour

Platte River Trail 36 Hour is a running race on September 25–27, 2026 in Casper, WY.

Date
September 25–27, 2026 (86 days to go)
Sport
Running
Register →

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:

  • 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!

Events

Platte River Trail 36 Hour

Weather

Typical Conditions

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.

Sunrise 6:55 AMSunset 6:56 PMDaylight 12h 1m

Host City

About Casper, WY

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

What Are You
Waiting For?

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.

86

Days to train

Race
Platte River Trail 36 Hour
Date
September 25–27, 2026

From Endurance Grid

About This Sport

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.

Read the Guide

Running

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.

Frequently Asked Questions (FAQs)

What is the Platte River Trail 36 Hour?+
Platte River Trail 36 Hour is a running race held in Casper, Wyoming on September 25, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
When and where is the Platte River Trail 36 Hour?+
Friday, September 25, 2026 in Casper, Wyoming at 1775 W 1st St. Check the event page for exact start times and wave schedules.
How do I register for the Platte River Trail 36 Hour?+
Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.

Platte River Trail 36 Hour

Sep 25, 2026

Register →