The Corps of Discovery Trail Races
About this race
In late July 1805, the Lewis and Clark Expedition reached Three Forks in present-day Montana, where the Jefferson, Madison, and Gallatin rivers converge to form the Missouri River.
Join us in celebrating this wonderful day with a 5K or 10K trail run in the beautiful Missouri Headwaters State Park, near the confluence of the Madison, Gallatin, and Jefferson rivers.
This event is a part of the Montana Trail Series.
Pick your distance
Running
The Meriwether 5K
The Clark 10K
Course
Route map and elevation profile
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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Other races near Three Forks
Different organizers, within 40 miles, in the next three months
John Colter Run
Cove Youth Basketball League
Cove Youth Basketball League / grade
5K Brew Run & Shakeout
🏃 Plan Your Next Race in Three Forks
Find upcoming events by distance:
- Three Forks 5K Races 2 races
- 10K Run Events in Three Forks 2 races
- Three Forks Running Calendar 2026 2 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, 3 Three Forks events
Spotted something wrong? Tell us and we'll fix it.