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Trail Running calendar near Spearfish 2026-2027

We have found 4 Trailruns within 80 miles of Spearfish. See below where and when you can find the races.

Xterra Deadwood Mickelson

Deadwood - 10 mi from Spearfish

Trail races on the Mickelson Trail between Rochford and Deadwood, South Dakota on June 6 to 7, 2026, including marathon, half marathon, five person relay, 5K and kids 1K; fields are limited and fees vary by date.

Black Hills 100 - Sturgis, SD

Sturgis - 18 mi from Spearfish

The Black Hills 100 offers four scenic trail races on the Centennial Trail system near Sturgis, South Dakota. Choose from a 100-mile, 50-mile, 50K, or 30K distance, all finishing at City Park. The event provides bus transport to start lines..

July 2026

Lean Horse Ultra

Custer - 51 mi from Spearfish

Lean Horse Ultra is a multi-distance trail running event on the George S. Mickelson Trail in the Black Hills, held July 31 to August 1, 2026, with 100 mile, relay, 50, 30, and 20 mile options and a CrossFit edition.