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City of Trees Marathon

Sat October 11, 2025 Boise, ID 83702 US Directions

Course Maps

We love this river. A water flow that originates from the snow-capped peaks of the Sawtooth and Boise mountains, our race courses will get you intimately close to the sounds of the river as it winds through a rocky canyon and melts into an urban setting. We do reserve the right to make changes as we can't be boring.

DISCLAIMER - All routes are subject to change at anytime. Please check back often.

AID STATIONS

Participants will cross aid stations roughly every two miles on the course. Aid Stations will be equipped water, sports drinks, and fuel. HOWEVER, we do place emphasis on Aid Stations on critical portions of our race. For example, turns and turnarounds seem to work better when at an Aid Station.
 
Please do not litter on course and dispose of your trash at the aid stations. We do have a team that sweeps the entire course for garbage post race, but please make their life easier and do not litter on the course.


FULL MARATHON - (Updated as of 8.19.2025) - CLICK HERE




HALF MARATHON - UPDATED 8.19.2025 - CLICK HERE



10K COURSE - UPDATED 8.19.2025 - CLICK HERE



5K COURSE - UPDATED 8.19.2025 - CLICK HERE

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