Le Grizz Ultramarathon & Relay
About this race
Le Grizz is a 50-mile Ultramarathon run just to the west of Montana's Glacier National Park on a gravel road that parallels the North Fork of the Flathead River. Runners will find themselves gaining views of the magnificent Crown of the Continent, made up of Northern Rockies of Southern British Columbia and Glacier Park, and surrounded by the changing colors of the aspen and larch.
The 2026 course is an out-and-back route which will begin and end at the Glacier Institute's Big Creek Outdoor Education Center, following the North Fork Road just beyond Red Meadow Creek, with a brief detour into our Polebridge Mercantile aid station.
The course contains approximately 2,300 feet of elevation gain across the 50 miles – metrics that are true to the traditional elevation profile of Le Grizz from the legacy Spotted Bear course. The road is undulating gravel with occasional gentle inclines – excellent for folks seeking their first ultramarathon finish.
Pick your distance
Trail running
50 Mile Ultramarathon
Running
50 Mile Relay
15K Run
5K Run
Typical race-day weather
Based on 11 years of Open-Meteo archive data for this event's race dates in Polebridge, plus the 3 days either side.
The sun rises at 7:50 AM and sets at 6:57 PM local time (MDT) in Polebridge on October 10, 2026 — 11h 07m 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
Done this event?
If you've participated in this event, share your experience with other runners
Results — Le Grizz Ultramarathon & Relay
Other races near Polebridge
Different organizers, within 40 miles, in the next three months
Whitefish Turkey Trot
Harvestfest 5k
Hot Pursuit Kalispell
West Valley School Boo Dash Fun Run
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, 1 Polebridge event
Spotted something wrong? Tell us and we'll fix it.