City of Trees Marathon

Event Details

• Date: Saturday, October 10, 2026
• Location: 733 S Pioneer Street, Boise, ID
• Course Maps: Course Maps will be updated once details have been finalized.

Swag and T-Shirt Information

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

Course Information

• Greenbelt System: Please note courses utilize the Boise Greenbelt system.
• Unpredictable Conditions: Should we run the Greenbelt, the river can be unpredictable.
• Local Challenges: Typical issues are created due to sidewalk construction, sinkholes, flooding, etc.
• Wildlife Encounters: During the run, you may encounter wildlife that may cause a delay in your progress and/or change in your planned route.

More Information

• Website: For more details, visit City of Trees Marathon.