The 2025 event has concluded.

City of Trees Marathon

Boise, ID, USA • October 11, 2025
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partly-cloudy-day Partly cloudy throughout the day.

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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.

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Historical Weather & Results

RunScore
Run Score: 8
Temp
73°F
Min/Max
51°/73°F
Dew
41°F
Days of Rain
0/1
Wind
4mph
Tap a row for details.
YearLow / HighRainResults

City of Trees Marathon 2024 Weather History

Clear conditions throughout the day.

2024
clear-night
51°/ 73°-
Run Score: 9
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