Beaverhead Endurance Runs

Beaverhead Endurance Runs

The Beaverhead Endurance Runs take place on July 11, 2026 near Salmon, Idaho; Leadore, Idaho; and Dillon, Montana. The event comprises two mountain trail races on rugged, varied terrain at high altitude. The organizer notes the route is rugged and challenging and asks participants to come prepared.

Distances

• 62.1 miles (100k)
• 34 miles (55k)

Beaverhead 100k
The 100k covers 62.1 miles with 12,700 ft of ascent and 15,100 ft of descent. Elevation ranges from about 5,500 ft to 10,000 ft with an average near 8,500 ft. Terrain is a mix of single track, ATV double track, and boulder or skree sections, with approximately 59% single track, 35% ATV double track, and 6% boulder/skree.

Beaverhead 55k
The 55k covers 34 miles with 5,900 ft of ascent and 8,900 ft of descent. Elevation figures include about 10,047 ft, 5,500 ft, and an average near 8,500 ft. Terrain is approximately 65% single track, 23% ATV double track, and 12% boulder/skree. The organizer notes the 55k has liberal cutoffs, but participants are still expected to be prepared for high altitude mountain conditions. Visit the organization's website for the most recent information.