Congratulations to the 4,000+ Boulderthon 2022 Finishers! View Results & Photos here.
marathon participants and tents in Boulder Reservoir

START & FINISH MAPS

Once available, Start & Finish Maps for our 2023 edition will be available here. Please refer to our 2022 edition maps for a preview of what's to come.

Marathon and Half Marathon Start Area Map

Boulder CO Marathon start area map

Most updated version as of 9/20/22

10K Start Area Map

Boulder CO 10K start area map

Most updated version as of 9/20/22

Finish Area Map

Boulderthon Expo Map

Most updated version as of 10/3/22