City of Trees Marathon
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City of Trees Marathon - October 11, 2025
The City of Trees Marathon takes place on Saturday, October 11, 2025, in Boise, Idaho. The event location is listed as 733 S Pioneer Street, Boise, ID 83702. The race program includes the following events:
- Marathon
- Half Marathon
- 10k
- 5k
Registration information on the event page shows registration closes October 11, 2025 at 11:59pm MDT. Prices are shown and a note indicates prices increase after July 30, 2025. A shirt deadline is noted: registrants who register after October 2, 2025 are not guaranteed a shirt. All City of Trees runners receive a finisher award. The event lists finisher food and drink for participants.
Course and logistics
Course maps are provided under the Event Info menu. The courses use the Boise Greenbelt system. The organizer notes the river and Greenbelt areas can be unpredictable and subject to sidewalk construction, sinkholes, flooding, or other issues. Wildlife may be present and could cause delays or require a change in route. Sponsors and supporting organizations are listed for the event. Visit the organization's website for the most recent information.
