Deep Creek Trail 1/2 Marathon

Deep Creek Trail 1/2 Marathon takes place in Telluride, Colorado, on September 26, 2026, with a 10:30 a.m. start. Organized by Confluence Events, it is a single trail half marathon (13.1 miles) in the San Juan Mountains of southwestern Colorado. Telluride sits at high elevation, so the run combines a familiar distance with thin air and mountain trails.

This half suits trail runners looking for a mountain race at a manageable distance, and road runners who want a challenging first trail half without stepping into ultra territory. The late-morning start makes same-day travel easier but also means you will be out around midday, so carry water. Train with hills and, if possible, a couple of runs at altitude in the weeks beforehand. A 10- to 12-week build with a weekly long run on trails and some downhill practice will protect your legs on the descents. Expect a finishing time well beyond your road half marathon best.