Le Grizz 50 Mile Ultramarathon Saturday, October 11, 2025
REGISTRATION OPEN NOW!!!
This Ain't No Ordinary Ultramarathon
Since it’s origination in 1982, the Le Grizz 50-mile Ultramarathon has commenced every autumn on the second Saturday of October. From 1982 to 2014, an upwards of 100 runners stood half awake on the frozen ground near Spotted Bear Ranger Station alongside the Hungry Horse Reservoir, waiting anxiously for a ceremonial shotgun blast to signify the start of one of the oldest 50-mile footraces in the world, and the first in Montana.
In 2015, Le Grizz changed both in ownership and location, having moved to the North Fork of the Flathead River. For several years, the race started and finished at the historic Polebridge Mercantile. In 2023, road construction projects on the North Fork Road near the Canadian border re-routed the course onto Big Creek Road, starting and finishing at the Big Creek Outdoor Education Center. The 2024 course was back on the North Fork Road, and in 2025, we are taking the start and finish back to the Polebridge Mercantile, running up to the Canadian Border!
50-Mile Ultramarathon, Relay, 10k & 5k Race Information
Whether you're a serious endurance athlete or a weekend warrior looking to put a relay team together to support a worthy cause, Le Grizz promises you an event like no other that you'll remember forever.
We also offer a 10k and 5k fun run geared toward friends and families who want to get outdoors, support our community, and have a great time in nature. Regardless of your ability, Le Grizz offers something for everyone.
Home of the World-Famous Huckleberry Bear Claw
In addition to the T-shirt, finishers award, and a race experience they'll never forget, those who cross the finish-line can satiate their grizzly appetites at our fried chicken pic-nic where we'll have cold Montana-brewed beer and free huckleberry bear claws for dessert, courtesy of the Polebridge Mercantile.
Le Grizz is Proudly Brought to You By
The Glacier Institute is a Montana non-profit committed to strengthening connections to the natural world through outdoor education. As the official education partner of Glacier National Park and Flathead National Forest, the Glacier Institute is well-recognized as the Flathead Valley's leader in outdoor education, with courses and camps for area youth, adults, and families. Its programs inspire natural connections to the natural world and create meaningful experiences that broaden understanding and cultivate creative thinking. For additional information, visit glacierinstitute.org
Thank You to Our Partners
