Beaverhead 100k and 55k

July 12th, 2025

Registration Opens November 1, 2024 at 6:00AM MST

The Beaverhead 100k and 55k races are true mountain races. The route is rugged and challenging over varied terrain all at high altitude. Please come prepared.

When & Where

July 12, 2025
100K starts at 4:00 AM
55K starts at 7:00 AM

Race takes place near Salmon ID, Leadore ID, and Dillon MT. View Google Map

Welcome to the Beaverhead Endurance Runs

Western State 100 logo
Beaverhead ridge running.jpg
Beaverhead skree and pines.jpg
Beaverhead skree and snow.jpg

Beaverhead 100k

At a Glance

  • Distance: 62.1 miles

  • Ascent/Descent: 12,700 ft/15,100 ft

  • Elevation: Max 10K ft., Min 5.5K ft., Avg. 8.5K ft

  • Terrain: 59% single track, 35% ATV double track, 6% boulder/skree

Beaverhead 55k

At a Glance

  • Distance: 34 miles

  • Ascent/Descent: 5,900 ft/8,900 ft

  • Elevation: 10,047 ft, 5,500 ft, 8,500 ft

  • Terrain: 65% single track, 23% ATV double track, 12% boulder/skree

News

Check out UltraTrailSeven’s 2022 100K Experience!

Check out Frugal Fit Dad’s and Frugal Fit Mom’s 2023 55K Experience!

Sponsors

WANT A CHALLENGE? DO ONE OR MORE OF OUR TWO RACE SERIES CHALLENGES

Idaho Trail Ultra Series

The Beaverhead is a 2023 Idaho Trail Ultra Series event. Run for awards and prizes. Visit the ITUS website for a list of all the series races and come join the fun!

Idaho 208

Run the RONR 108K in June and Beaverhead 100K in July and receive a cool one-of-a-kind custom award at the Beaverhead finish line!!!!!!