City of Trees Marathon
Always double-check with the organizer's website! This page may contain affiliate links.
City of Trees Marathon - Boise, ID
The City of Trees Marathon takes place on Sunday, October 11, 2026, in Boise, Idaho. The event is organized by City of Trees Marathon and is centered at 1400 Bronco Ln, Boise, ID 83706, US. Course maps will be updated once details are finalized.
Events on the day include:
- Marathon
- Half Marathon
- 10k
- 5k
- SoleKIDs 5K
- Virtual (any distance)
The courses make use of the Boise Greenbelt system. The river and Greenbelt can be unpredictable; issues such as sidewalk construction, sinkholes, and flooding can affect the route. Participants may encounter wildlife that could delay progress or require route changes.
Participant information noted by the organizer: registrants receive a participant T-shirt and all City of Trees runners receive a finisher's award. Registrants who register after October 1, 2026 are not guaranteed a shirt. Registration details published by the organizer list prices and registration end dates for each event, and course maps will be posted when finalized. Visit the organization's website for the most recent information.
