50K ultramarathons in Idaho, United States in 2026

Nighttime out-and-back courses starting and finishing at Homedale Middle School, with a mix of paved and dirt roads through scenic countryside

Idaho wilderness trails with glimpses of civilization, curated course design, abundant wildlife, and a tranquil, uncrowded 50K experience near Island Park

Rugged 50k trail featuring varied terrain through forests, open fields, and rolling hills with technical sections and scenic vistas

Challenging 50K mountain route through City of Rocks and Castle Rocks, single-track trails, 1,500-foot climb, granite spires, panoramic summit views

Boise Foothills course featuring favorite local trails, starting and finishing at Military Reserve, 50 miles through scenic Idaho landscapes

Challenging 50k on technical single-track and logging roads along Moscow Mountain, featuring significant elevation and Palouse vistas.

Scenic loop course through Ponderosa State Park, featuring accessible trail terrain and a community-focused atmosphere

Rugged Idaho trail 50K with singletrack, double track, gravel road, about 6,000 ft of gain, and the climb to Prospector Peak.