Yellowstone 50 & 25K Start and Finish at the Rendezvous Ski Trails, West Yellowstone, Montana 50K and 25K All Races Start at 9am Loop: Start and Finish at Same Location Mixed Rolling Terrain (No Pavement) Approximately 1,000 Feet Gain/Loss (25K) and 2,000 Feet Gain/Loss (50K) 25K One Full Aid Station, One Water Station-50K Two Full Aid Stations, Two Water Stations Read More… from Yellowstone 50 & 25K