City of Trees Marathon 2026 — Boise, ID

Date
October 11, 2026
Location
Boise, ID
Venue
1400 Bronco Ln
Start Time
8:00 AM
Entry Fee
$35.00 – $125.00
Events
Marathon, Half Marathon, 10k, 5k
Includes
T-Shirt
Register NowRegistration Open

Registration for the City of Trees Marathon costs between $35 and $125 depending on your event selection. Taking place on October 11, 2026, in Boise, Idaho, this race offers multiple distance options: a 1-mile run, 6.2-mile run, half marathon, and full 26.2-mile marathon. The race starts at 8:00 AM from 733 S Pioneer Street. If you can't travel to Boise, the race organizers provide a virtual participation option, allowing you to complete your chosen distance on your own schedule and location. This range of distances accommodates various fitness levels, from newer runners to those training for a full marathon.

From the Race Organizer
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 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.

Hotels Near This Race

Find accommodation close to the start line in Boise, ID. Sorted by distance from the race venue. Book early — race weekend hotels fill fast.

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City of Trees Marathon 2026 — Boise, ID

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Race Travel Insurance

Don't forget travel insurance for October 11.

You've trained for months and booked a trip to Boise, ID. A pre-race injury, a delayed flight, or a family emergency can derail the whole thing. Travel insurance can help cover your race entry fee, hotel, and flights if you can't make it, and may cover medical costs if something goes wrong on the course. Plans typically only run 5-7% of your total trip cost — and running events are covered under standard plans with no additional coverage needed.

  • Trip cancellation up to 100% of prepaid costs
  • Running events covered under standard plans — no add-ons needed
  • Trip interruption up to 150% of non-refundable costs
  • Emergency medical up to $250,000
  • Cancel For Any Reason add-on available
  • 24/7 real-time support
Get a Quote — Faye Travel Insurance

Affiliate links — we may earn a commission at no cost to you. Coverage terms vary by state and plan. Review policy details before purchase.

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Frequently Asked Questions

When is City of Trees Marathon 2026 — Boise, ID?

City of Trees Marathon 2026 — Boise, ID takes place on October 11, 2026. The race is held in Boise, Idaho.

Where is City of Trees Marathon 2026 — Boise, ID held?

City of Trees Marathon 2026 — Boise, ID is held at 1400 Bronco Ln in Boise, Idaho.

Where can I find hotels near City of Trees Marathon 2026 — Boise, ID?

RaceHotelFinder shows hotels sorted by distance from the race venue in Boise. Use the map or list view on this page to compare options and book race weekend accommodation.