Skip to main content
Run Vibes
Browse races
City of Trees Marathon logo

City of Trees Marathon

Sun, Oct 11, 2026, 8:00 AM MDT

Location
Boise, ID
733 S Pioneer Street, 83702
Type
RUN
Official registration

Sign up and verify details on the organizer’s official page.

Vibe analysis coming soon

Course feel, difficulty, and community fit are being added to this listing. Check back, and always confirm details on the official registration page.

Distances & registration

5 options

Registration for all distances is through the official signup link above.

  • 3.1 Miles

    Sun, Oct 11, 9:00 AM MDT · From $38.53

    Opens Nov 19, 2025, 5:00 AM MST · Closes Apr 30, 2026, 7:59 PM MDT

  • 6.2 Miles

    Sun, Oct 11, 9:00 AM MDT · From $49.11

    Opens Nov 19, 2025, 5:00 AM MST · Closes Apr 30, 2026, 7:59 PM MDT

  • 13.1 Miles

    Sun, Oct 11, 8:30 AM MDT · From $59.69

    Opens Nov 19, 2025, 5:00 PM MST · Closes Apr 30, 2026, 7:59 PM MDT

+ 2 more options
  • 26.2 Miles

    Sun, Oct 11, 8:00 AM MDT · From $70.27

    Opens Nov 19, 2025, 5:00 PM MST · Closes Apr 30, 2026, 7:59 PM MDT

  • Virtual - any distance!

    Sun, Oct 11, 9:00 AM MDT · From $49.11

    Opens Mar 16, 2026, 2:23 AM MDT · Closes Oct 11, 2026, 8:00 AM MDT

Vibe Check

Push Potential

longer distance

Based on terrain, weather, and distance data.

The course

  • —
From the organizer

Sunday, October 11, 2026 Course Maps will be updated once details have been finalized.

GREAT SWAG and T-SHIRT DEADLINE Comfiest long sleeve t-shirt, swag thanks to our amazing sponsors, and finisher food/drink, all COT runners get a finisher's award. Please note that registrants registering after October 1, 2026 are not guaranteed a shirt.

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.

Also in this area

Easier options nearby

Lower-difficulty races in the same state.

More demanding options nearby

Higher-difficulty races in the same state.