Napa Valley Trail Marathon

2026 Napa Valley Trail Marathon, Half Marathon & 10K takes place at Bothe-Napa Valley State Park in Saint Helena, California. The event offers three trail distances: marathon, half marathon, and 10K. Runners tackle lush single-track with hills, streams, and rocky sections; the course is marked with orange ribbons.

The 10K is a single loop, the half marathon doubles that loop, and the marathon combines the loop with a four-mile out-and-back to the Old Bale Grist Mill, repeated twice, before a final 10K loop. The park is described as a local treasure near wineries and restaurants. The race is limited to 300 participants, with finishers earning medals and age-group ribbons. Visit the organization's website for the most recent information.