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50 mi15K5KRegistration open

Le Grizz Ultramarathon & Relay

Polebridge, Montana200 spots
Entry from
$35
Aid stations
9
Days to go
4

At a glance

Date
Oct 10, 2026
Location
Polebridge, Montana
Distances
50 mi, 15K, 5K
Elevation gain
2,400 ft
Aid stations
9, 9 with crew access
Registration
Registration open until Oct 10, 2026, via runsignup.com
Official site
runlegrizz.com
Listed from
RunSignUp
Last checked
Oct 5, 2026

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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.

Key dates

Registration opens

Oct 12, 2025

Tier 1 ends

Oct 12, 2025

Tier 2 ends

Jun 1, 2026

Registration closes

Oct 10, 2026

4d

Race day

Oct 10, 2026

4d

Standard ends

Oct 10, 2026

4d

Tier 3 ends

Oct 10, 2026

4d

Pricing

50 Mile Ultramarathon

Tier 3, until Oct 10, 2026

$150

50 Mile Relay

Standard, until Oct 10, 2026

$80

15K Run

Standard, until Oct 10, 2026

$50

5K Run

Standard, until Oct 10, 2026

$35

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Registration openings and major changes, like a new date or a cancellation.

Aid stations

9

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