City of Trees Marathon
Race snapshot
Race Day
46–70°F · Feels cool
Total elevation gain
Relatively flat course · Net elevation change +0 ft
Crowd Rating
Good crowd energy
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The Lowdown
City of Trees Marathon is held in Boise, ID. Race day is October 11, 2026, with a 08:00 local start. The official event listing also includes Half Marathon, 10k, 5k, SoleKIDs 5K. Registration is open through the official event listing.
Questions about the City of Trees Marathon 2026
When is the City of Trees Marathon 2026?
This edition ran on Sunday, October 11, 2026. The 2027 date is to be confirmed.
Where is the City of Trees Marathon?
Boise, Idaho, United States.
What is the City of Trees Marathon time limit?
6 hours.
What is the City of Trees Marathon elevation gain?
200 ft (61 m) of total elevation gain. Net elevation change: +0 ft (0 m). Relatively flat course.
What is the weather like at the City of Trees Marathon?
Race-day temperatures are usually 8–21 °C (46–70 °F). Feels cool.
Is the City of Trees Marathon a Boston qualifier?
Yes. This race is a certified Boston Marathon qualifying event.
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