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
Typical race-day weather
Based on 8 years of Open-Meteo archive data for this event's race dates in Three Forks, plus the 3 days either side.
The sun rises at 6:00 AM and sets at 9:05 PM local time (MDT) in Three Forks on July 24, 2027 — 15h 05m 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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Other races near Three Forks
Different organizers, within 40 miles, in the next three months
Cove Youth Basketball League / grade
Jingle Jog 5K
Santa Run for Education 5K Race
Huffing For Stuffing
🏃 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.