Napa Valley Endurance Run

Located in Calistoga, California, the Napa Valley Endurance Run comprises four trail distances: 50K, 35K, half marathon, and 10K. The loop starts and finishes on the Calistoga Fairgrounds' Great Lawn and climbs into Robert Louis Stevenson State Park, culminating at Mount St. Helena.

The 50K is renowned as one of the toughest in the region, with rugged single-track, steep climbs, and about 7,500 feet of total elevation, passing Palisades, Table Rock, and the Mt. St. Helena ascent.

The event features multiple aid stations, drop-bag options, a UTMB Index designation for key distances, and finishers receive medals and shirts. Family-friendly finish area and post-race festivities. Visit the organization's website for the most recent information.