City of Trees Marathon

Boise, ID, USA • October 10, 2026
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Race Day Weather

clear-day
47°
68° high
Breezy
Dry

Cool start, warming trend

Runners will face a temperature rise from 48°F at the start to a peak of 67°F. With a light headwind of 9 mph, pacing should be adjusted as temperatures climb. Humidity is moderate at 47%, allowing for comfortable running, but hydration will still be key as the day warms up.

Race day forecast available in 185 days
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Pace Calculator

Distance: 26.2mi
0:00:00
HH:MM:SS
Pace
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Weather Adj.
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Common Goals:

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. Source

Area Map

Course Map

Course Map Unavailable

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FAQ

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When is the 2026 City of Trees Marathon?

The 2026 City of Trees Marathon will be held on Saturday October 10, 2026.

Is the City of Trees Marathon a Boston Marathon Qualifier?

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

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

The forecast calls for a high of 68°F and a low of 47°F with a 0% chance of rain.

Historical Weather

Based on 2 years of data
Avg Temp
65°F
L:49° H:65°
RunScore
8
Conditions
Rain Freq
0%
0 of 2 yrs
Wind9mph
Dew38°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2025 City of Trees Marathon

Clear conditions throughout the day.

2025
clear-night
46°/58°-
8

2024 City of Trees Marathon

Clear conditions throughout the day.

2024
clear-night
51°/73°-
9

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