Mt. Umunhum Trail Marathon

San Jose, CA, USA • February 7, 2026
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partly-cloudy-day Partly cloudy throughout the day.

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When is the 2026 Mt. Umunhum Trail Marathon?

The 2026 Mt. Umunhum Trail Marathon will be held on Saturday February 7, 2026.

Is the Mt. Umunhum Trail Marathon a Boston Marathon Qualfier?

No, the Mt. Umunhum Trail Marathon is NOT a Boston Marathon qualifier.

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Historical Weather & Results

RunScore
Run Score: 8
Temp
61°F
Min/Max
48°/61°F
Dew
45°F
Days of Rain
0/4
Wind
9mph
Tap a row for details.
YearLow / HighRainResults

Mt. Umunhum Trail Marathon 2025 Weather History

Cloudy skies throughout the day with morning rain.

2025
cloudy
55°/ 61°-
Run Score: 8

Mt. Umunhum Trail Marathon 2024 Weather History

Cloudy skies throughout the day with late afternoon rain.

2024
cloudy
48°/ 58°-
Run Score: 9

Mt. Umunhum Trail Marathon 2023 Weather History

Cloudy skies throughout the day with rain.

2023
partly-cloudy-night
49°/ 65°-
Run Score: 7

Mt. Umunhum Trail Marathon 2022 Weather History

Partly cloudy throughout the day.

2022
partly-cloudy-night
41°/ 62°-
Run Score: 8
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:

OR
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:

OR