Napa Valley Trail Marathon
Napa Valley Trail Marathon is a Bothe-Napa state park trail race with hills, rocky footing, creek crossings, and a smaller-field Northern California feel.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 6, 2026.
Quick facts
- Hosted at Bothe-Napa Valley State Park in Calistoga.
- Trail marathon with singletrack, hills, creek crossings, and rocky footing.
- Marathon format uses repeated park loops plus an out-and-back toward Old Bale Grist Mill.
- Official race materials list a six-hour cutoff and a no-headphones rule.
2027 Napa Valley Trail Marathon registration
Registration for the 2027 Napa Valley Trail Marathon runs through the official registration page at raceroster.com.
About the Napa Valley Trail Marathon
Napa Valley Trail Marathon is an Enviro-Sports trail race at Bothe-Napa Valley State Park. The official 2026 page positions it as a park-based marathon, half marathon, and 10K with all events starting and finishing inside the park.
Course
Official race materials describe single-track, hills, streams, and rocky sections. The marathon uses repeated park loops and an out-and-back toward the Old Bale Grist Mill, so footing and rhythm matter more than split-chasing.
Race-day weather
Late March in Napa Valley usually means cool air and potentially softer trails after rain. Temperature is rarely the hardest part here; traction, footing, and narrow trail sections matter more.
Past Napa Valley Trail Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Saturday, March 21, 2026 | Completed | Open results |
| 2025 | Saturday, October 25, 2025 | — | — |
| 2024 | Saturday, May 4, 2024 | Completed | Open results |
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Napa Valley Trail Marathon FAQ
When is the Napa Valley Trail Marathon?
We're waiting for the finalized date for the 2027 Napa Valley Trail Marathon. The most recent running was on Saturday, March 21, 2026.
How do I register for the Napa Valley Trail Marathon?
Register for the Napa Valley Trail Marathon through the official registration link: marathonscout.com/go/napa-valley-trail-marathon/register. It opens the race registration page at raceroster.com.
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