City of Trees Marathon

📅 Race Date and Location

Saturday, October 10, 2026
Location: 733 S Pioneer Street, Boise, ID

🎽 Swag & T-Shirt Deadline

• Comfy Merchandise: Comfiest long sleeve t-shirt and swag thanks to our amazing sponsors.
• Finisher Food/Drink: All COT runners get a finisher's award.
• Registration Notice: Please note that registrants registering after October 1, 2026 are not guaranteed a shirt.

🌳 Course Information

Please note courses utilize the Boise Greenbelt system. Should we run the Greenbelt, the river can be unpredictable. Systems and entities that govern the local Greenbelt are constantly dealing with these challenges. Typical issues are created due to sidewalk construction, sinkholes, flooding, etc. During the run, you may encounter wildlife that may cause a delay in your progress and/or change in your planned route. Or you may cause your own delay to stop and listen to the amazing sounds this course creates.

🔗 Learn More

For more details, visit the official race page: City of Trees Marathon.