Napa Valley Trail Marathon

Calistoga, CA, USA • March 21, 2026
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partly-cloudy-day Partly cloudy throughout the day.

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Distance: 26.2mi
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Babbling streams will be your soundtrack as you challenge yourself on the lush single-track within Bothe-Napa Valley State Park. The course is a bit challenging with the hills, streams and rocks - which makes it all the more exciting and rewarding. This state park is a local treasure that is untapped by tourists and located just minutes from the area's great restaurants and wineries. The event is limited to 300 participants and sells out every year so don't wait too long to register! Source

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When is the 2026 Napa Valley Trail Marathon?

The 2026 Napa Valley Trail Marathon will be held on Saturday March 21, 2026.

Is the Napa Valley Trail Marathon a Boston Marathon Qualfier?

No, the Napa Valley Trail Marathon is NOT a Boston Marathon qualifier.

Historical Weather

Based on 3 years of data
Avg Temp
60°F
L:45°H:60°
RunScore
9
Conditions
Rain Freq
33%
1 of 3 yrs
Wind8mph
Dew48°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore

2025 Napa Valley Trail Marathon

Partly cloudy throughout the day.

2025
cloudy
48°/62°-
8

2024 Napa Valley Trail Marathon

Partly cloudy throughout the day with a chance of rain throughout the day.

2024
rain
46°/57°Light
7

2023 Napa Valley Trail Marathon

Partly cloudy throughout the day.

2023
clear-night
40°/61°-
8
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You Need an Account For That

Setting up a racecast.io account will allow you to start building a reputation in the community. Over time you'll be able to rate races, join the discussion, and post in the community.

Right now we are invite only, you can get on the waitlist by entering your email below:

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