The 2025 event has concluded.

City of Trees Marathon

Boise, ID, USA • October 11, 2025
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clear-day Clear conditions throughout the day.

We love this river. A water flow that originates from the snow-capped peaks of the Sawtooth and Boise mountains, our race courses will get you intimately close to the sounds of the river as it winds through a rocky canyon and melts into an urban setting. We do reserve the right to make changes as we can't be boring. Source

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When is the 2025 City of Trees Marathon?

The 2025 City of Trees Marathon will be held on Saturday October 11, 2025.

Is the City of Trees Marathon a Boston Marathon Qualfier?

No, the City of Trees Marathon is NOT a Boston Marathon qualifier.

Historical Weather

Based on 1 years of data
Avg Temp
73°F
L:51°H:73°
RunScore
8
Conditions
Rain Freq
0%
0 of 1 yrs
Wind4mph
Dew41°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2024 City of Trees Marathon

Clear conditions throughout the day.

2024
clear-night
51°/73°-
9
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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:

OR