STRS Horseshoe Gulch Grind

Trail marathon and Heavy Half through Leadville’s historic mining district on June 27, 2026, reaching Mosquito Pass at 13,185 feet. The Marathon is a Leadville Trail 100 qualifier and general registration is sold out.

A community 5K in downtown Leadville on July 4, 2026, with a youth category and an Independence Day parade afterward. Proceeds support local youth athletics and recreation.

A 12.2K uphill trail race in Vail, Colorado marking its 50th running, the Vail HillClimb gains 2,128 feet across dirt and gravel service roads to finish at Mid-Vail, with aid stations, race shirts, awards by age group and a post-race raffle..

A high altitude trail running event in Como and Grant, Colorado offering ultras and shorter trail distances across alpine meadows, single track and historic mining terrain, with aid stations, drop bag options, crew and pacer rules.