City of Trees Marathon
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City of Trees Marathon
The City of Trees Marathon takes place on Sunday, October 11, 2026, in Boise, Idaho. The event location is listed as 733 S Pioneer Street, Boise, ID 83702. Course maps will be updated once final details are available.
The event includes these distances:
- Marathon
- Half Marathon
- 10 km
- 5 km
- Virtual any distance
The courses utilize the Boise Greenbelt system. Organizers note the river and Greenbelt can be unpredictable and that local conditions may affect the route. Typical issues mentioned include sidewalk construction, sinkholes, and flooding. Participants may encounter wildlife that could delay progress or require a minor route change. Course conditions and routing are subject to change as details are finalized.
All City of Trees runners are listed as receiving a long sleeve t-shirt, sponsor swag, finisher food and drink, and a finisher award. Registrants who register after October 1, 2026 are not guaranteed a shirt. Visit the organization's website for the most recent information.
