Napa Valley Trail Marathon, Half Marathon & 10K

Enviro Sports operates the Napa Valley Trail Marathon, Half Marathon & 10K on March 21, 2026, showcasing the beautiful wine country trails near California's Napa Valley. The event features multiple distance options including full marathon, half marathon, and 10K trail courses. Enviro Sports is a family-owned trail running company based in Stinson Beach, California, specializing in scenic trail races across California, including events in Napa Valley, Marin, and the Death Valley region. Participants can expect well-marked courses through natural landscapes, aid stations, and finisher medals.