Sunday, October 11 · 5K · 10K · Half Marathon · Marathon · Boise, ID
City of Trees Marathon
Sunday, October 11, 2026 Course Maps will be updated once details have been finalized. GREAT SWAG and T-SHIRT DEADLINE Participant T-shirt and 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…
Start line: 1400 Bronco Ln
Register →29 days to race day
4 weeks to race day — get a training plan
A week-by-week plan scaled to Sunday, October 11, built around the Boise run clubs on your training days — shareable by URL, no account needed.
Build my plan →Train for it with a crew
A 5K is twelve weeks of Saturdays away, even from the couch. Run clubs in Boise →
Frequently asked
- When is the City of Trees Marathon?
- The next City of Trees Marathon is Sunday, October 11 in Boise, ID.
- Where does the City of Trees Marathon start?
- The City of Trees Marathon starts at 1400 Bronco Ln in Boise, ID.
- What distances does the City of Trees Marathon offer?
- The City of Trees Marathon offers Marathon, Half Marathon, 10K and 5K.
- How do I register for the City of Trees Marathon?
- You can register for the City of Trees Marathon on RunSignup. Use the Register link above; RunVibe does not sell registrations directly.
Listed on RunSignup. Race details are the organiser’s — confirm the date and start time with them before you travel.