Napa Valley Endurance Run

Event

The Napa Valley Endurance Run in Calistoga, California is a trail event on April 12, 2026. It is organized by Scena Performance and offers four distances:

• 50k
• 35k
• Half Marathon
• 10k

The 50k, 35k and Half Marathon are UTMB Index races. All races start and finish at the Great Lawn at the Calistoga Fairgrounds and run into Robert Louis Stevenson State Park and nearby trails.

Course and race logistics

All courses use trail single track and fire road with one highway crossing at Highway 29. Key trail sections include Oat Hill Mine Trail, the Palisades Trail, Table Rock, Lasky Point and the Mount St. Helena Trail. The 50k is an out-and-back to the top of Mount St. Helena and lists a net elevation change of about 7,250 ft. The 35k and Half Marathon list net elevation changes of 5,250 ft and 4,250 ft respectively. The 10k is an out-and-back on Oat Hill Mine Trail with a turnaround just past the 2 mile mark.

Aid and cutoffs: aid stations are placed along the courses. The 50k visits aid stations multiple times and has drop bag service at the Highway 29 lot. Runners are advised to carry up to 40 ounces of water because some trail sections are up to six miles between stations. Runners who do not reach the Highway 29 aid station by 11:45 may be moved to the 35k; a hard cutoff at Highway 29 is also noted. Finishers receive a medal and a shirt; awards are given to the top three finishers by gender and age group awards are offered when fields exceed 50 entrants. GPX files and course maps are available. Visit the organization's website for the most recent information.