Summit Line

⏵ Course guide · Montana cult classic

John Colter Run Guide

The John Colter Run is not your average 7.5 mile trail race. A black-powder rifle starts the field, a train stops just for you at the first crossing, and the finish comes after wading the Gallatin River. I will walk you through the format and the crossings first, then give you a strategy for a short, fast, genuinely unusual Montana trail race.

⏵ At a glance

John Colter Run quick facts

Date
Saturday, September 19, 2026
Location
Missouri Headwaters State Park, Three Forks, Montana
Distance
About 7.5 miles (approximately 7 miles per the course description)
Start
9:00 AM sharp, signaled by a black-powder rifle shot
Terrain
First 1.5 miles paved/gravel road, remaining miles on rugged cross-country trail
Crossings
Two railroad crossings and two water crossings, including the Gallatin River
Field cap
300 runners; historically over-subscribed, no race day registration
Organizer
Big Sky Wind Drinkers

These facts come from the official Big Sky Wind Drinkers race page. No elevation gain figure is published. Check the current year details and registration status before you commit.

The format: a re-enactment, not a standard trail race

John Colter was a member of the Lewis and Clark expedition who, in 1808, was stripped naked and forced to run for his life from a band of Blackfeet warriors near what is now Three Forks, Montana. The race that bears his name reenacts that chase, with the field starting together at the sound of a black-powder rifle. Nobody has to run naked, but the spirit of the escape is baked into the course.

A road opener, then real cross-country trail

The first 1.5 miles run on paved or gravel road, a fast, wide-open opening that lets the field spread out before things get technical. From there the remaining roughly 5.5 miles switch to rugged trail described by the organizers as relatively rough but suited for cross-country running, similar terrain to what Colter himself would have crossed. Expect uneven footing and no wide, groomed path once you leave the road section.

A train stops just for the race, and you cross it twice

The course crosses active railroad tracks twice. At the first crossing, about 1.5 miles in, Montana Rail Link actually halts all train traffic specifically for this race, one of only two events in the state that gets this treatment. The second crossing, around mile 7, runs under the tracks instead of over them, and by then trains may be running again, so the course is built to route you safely underneath.

The finish: mud, then the Gallatin River

The last quarter mile is where the race earns its reputation. You go under the railroad bridge through mud that can run knee deep, tie your shoes tight, then cross the Gallatin River itself, which can be waist deep, with a safety rope secured across it to help you through. Bring a full change of clothes for the post-race barbecue, because you will finish wet no matter how careful you are.

Strategy for a short, technical, crossing-heavy race

At roughly 7.5 miles, this is closer to a fast trail 10-miler than an endurance test, so effort management matters less than respecting the terrain transitions and the water crossings at the end.

Run the road section honestly, save legs for the trail

The paved opening mile and a half invites a hard start, and with a 300-runner field starting together at the rifle shot, there is real incentive to go out fast and find open space before the trail narrows. Just remember the technical cross-country section is still ahead, a grade-adjusted pace approach keeps your effort honest once the footing changes rather than letting road-pace momentum carry you into rougher ground too fast.

Respect the water crossings at the finish

A fast finishing kick means nothing if you take a bad step in knee-deep mud or a waist-deep river crossing in the final quarter mile. Slow down through both crossings, use the safety rope at the Gallatin River, and treat the last stretch as a technical section to manage carefully rather than a place to empty the tank.

⏵ Train for your next race with Summit Line

Whether John Colter Run is a season opener or a fun detour from your bigger goal race, Summit Line builds a training plan around YOUR real fitness and reads your actual training data instead of a generic template.

John Colter Run FAQ

What is the John Colter Run?

The John Colter Run is a themed trail race re-enacting the 1808 escape of mountain man John Colter, who was captured, stripped naked, and forced to flee for his life from a group of Blackfeet warriors near present-day Three Forks, Montana. The 300-runner field starts together at 9:00 AM sharp, signaled by a black-powder rifle shot, and covers about 7.5 miles at Missouri Headwaters State Park, retracing rough terrain meant to echo Colter's real escape route (minus the naked part).

How hard is the John Colter Run?

At about 7.5 miles, the John Colter Run is short by ultra standards, but do not mistake short for easy. The first 1.5 miles run on paved or gravel road, then the remaining roughly 5.5 miles switch to rugged, cross-country-style trail described by the race itself as relatively rough but suited for cross-country running. No elevation gain figure is published, so treat this as a technical, fast trail race rather than a mountain climb.

What are the railroad and water crossings at John Colter Run?

There are two railroad crossings on course. Montana Rail Link stops all train traffic for the first crossing, about 1.5 miles in, specifically to let runners through safely, one of only two events in the state where this happens. The second crossing, about 7 miles in, goes under the tracks and trains may be running again by the time you reach it. In the final quarter mile you also cross water twice: first under the railroad bridge, where the mud can run knee deep, and then the Gallatin River itself, which can be waist deep with a safety rope secured across it. Tie your shoes tight and expect to get wet.

How do I get into the John Colter Run?

The race caps its field at 300 runners and has historically sold out, with organizers describing themselves as routinely "over full." There is no race day registration, so you need to register online ahead of time through the official RunSignUp page, and register early given the demand. Parking is also limited at Missouri Headwaters State Park, so carpooling and using the provided shuttle from overflow parking is expected.

What should I know before running John Colter Run?

Bring an extra change of clothes: the finish-area water crossings mean most runners end the race genuinely wet and muddy, and there is a post-race barbecue and awards ceremony to change into dry clothes for. Weather in Montana in mid-September can swing from a heat wave to snow, so check the forecast in the days before and dress in layers you can shed. The trail is marked with rock cairns, flags, and a distinctly Colter-themed mix of skulls, bones, and beer bottles, so know what you are looking for and pay attention, especially since the course is not a simple out-and-back.

Link this guide

Race directors and clubs: link or embed this guide anywhere. It stays current.

HTML link
<a href="https://runsummitline.com/guides/john-colter-run">The John Colter Run course guide</a>

This guide is independent and for planning only. The course details, dates, and registration status come from public sources and can change year to year, so confirm the current specifics with the official race before you register or run. The pacing advice is general and not medical advice.