Napa Valley Trail Marathon

Event overview

The 34th annual Napa Valley Trail event takes place on March 21, 2026, at Bothe-Napa Valley State Park on Saint Helena Highway in Saint Helena, California. The event is limited to 300 participants. Distances offered are:

• Marathon
• Half Marathon
• 10K

Registration fees vary by distance and by adult or youth category. Early-bird pricing windows are listed for each distance. Bib numbers are mailed beginning two weeks before the event; participants who do not receive a mailed bib can pick one up on race morning. T-shirts are provided to all participants. Personalized award ribbons will be mailed to the top three finishers, male and female, in each age group for all distances. Finisher medals are provided for Full and Half Marathon finishers.

Course and logistics

The course uses single-track trails within Bothe-Napa Valley State Park and includes hills, streams, and rocky sections. Course turns and trail crossings are marked with orange ribbon. The 10K is a single loop. The Half Marathon runs the 10K loop twice. The Marathon consists of the 10K loop plus a 4-mile out-and-back section to the Old Bale Grist Mill, repeated, and then a final 10K loop. There is one aid station at the start/finish area; marathoners encounter aid at miles 6, 10, 16, and 20. The course cut-off is 6 hours. Headphones and other audio devices are not allowed on course for safety. Parking inside the park is $10 per vehicle; overflow parking is available along Hwy 29. Visit the organization's website for the most recent information.