City of Trees Marathon

Boise, ID, USA · October 10, 2027
partly-cloudy-day49°·64° high·Breezy·Dry
9
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Race Day Weather

partly-cloudy-day
49°at start
66° high
Breezy
Dry

Cool start, warming trend

Runners will face a temperature rise from 49°F at the start to a peak of 66°F. Wind will be light, with a maximum of 9 mph from the S. Humidity is moderate at 42%, making for a comfortable experience, but runners should adjust their pace as temperatures climb later in the race.

Race day forecast available in 338 days
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Distance: 26.2mi
0:00:00
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Race Info

The City of Trees Marathon is held each October in Boise, Idaho, with a marathon, half marathon, 10K and 5K. The courses use the Boise Greenbelt, and in 2026 the start and finish were at Boise State University Stadium. The race is organized by the Boise nonprofit SoleKIDs and has a 6-hour marathon limit.

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FAQ

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When is the 2027 City of Trees Marathon?

The 2027 City of Trees Marathon will be held on Sunday October 10, 2027.

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 2027 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 5 years of data
Avg Temp
66°F
L:48° H:66°
RunScore
8
Conditions
Rain Freq
0%
0 of 5 yrs
Wind11mph
Dew34°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2026 City of Trees Marathon

Partly cloudy throughout the day with late afternoon rain.

2026
cloudy
45°/54°-
7

2025 City of Trees Marathon

Clear conditions throughout the day.

2025
clear-day
46°/58°-
8

2024 City of Trees Marathon

Clear conditions throughout the day.

2024
clear-day
51°/73°-
8

2023 City of Trees Marathon

Partly cloudy throughout the day.

2023
cloudy
53°/70°-
8

2022 City of Trees Marathon

Clear conditions throughout the day.

2022
clear-day
47°/73°-
8

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