City of Trees Marathon

Boise, ID, USA · October 11, 2026
partly-cloudy-day55°·66° high·Breezy·Dry
9
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Race day weather currently unavailable.

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Distance: 26.2mi
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Race Info

The City of Trees Marathon in Boise, Idaho, offers runners a scenic journey through the city's lush parks, tree-lined streets, and along the picturesque Boise River. The course features a mostly flat terrain with subtle elevation changes, providing a comfortable yet engaging running experience. Participants can expect well-marked paths, frequent aid stations, and a vibrant community atmosphere that showcases Boise's natural beauty and welcoming spirit.

Area Map

Course Map

FAQ

When is the 2026 City of Trees Marathon?

The 2026 City of Trees Marathon will be held on Sunday October 11, 2026.

Is the City of Trees Marathon a Boston Marathon Qualifier?

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

What is the time limit for the City of Trees Marathon?

The time limit for the City of Trees Marathon is 6 hours.

What will the weather be like for the 2026 City of Trees Marathon?

The forecast calls for a high of 71°F and a low of 47°F with a 2% chance of rain.

Historical Weather

Based on 4 years of data
Avg Temp
69°F
L:49° H:69°
RunScore
8
Conditions
Rain Freq
0%
0 of 4 yrs
Wind10mph
Dew35°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2025
clear-day
46°/58°-
8
2024
clear-day
51°/73°-
8
2023
cloudy
53°/70°-
8
2022
clear-day
47°/73°-
8