City of Trees Marathon

Race Date

Sunday, October 11, 2026

Course Information

• Course Maps: Course Maps will be updated once details have been finalized.
• Boise Greenbelt: Please note courses utilize the Boise Greenbelt system.
• Environmental Factors: The river can be unpredictable, and local governing entities are constantly dealing with challenges.
• Wildlife Encounters: During the run, you may encounter wildlife that may cause a delay in your progress and/or change in your planned route.

Swag and Registration

• Swag and T-Shirt: Comfiest long sleeve t-shirt, swag thanks to our amazing sponsors, and finisher food/drink.
• Finisher's Award: All COT runners get a finisher's award.
• Registration Deadline: Please note that registrants registering after October 1, 2026 are not guaranteed a shirt.

Additional Information

You may cause your own delay to stop and listen to the amazing sounds this course creates.

Registration Link

Register for the City of Trees Marathon