Register now to save with Early Bird Pricing! New in 2022: 5k, 10k + Kids Run.

COURSE MAPS

Course Maps & Elevations may be adjusted based on covid-19 safety modifications, local and state recommendations, and higher-than-anticipated registration numbers to accommodate a larger participant count, and provide the best overall runner, spectator, and Boulder County & City of Boulder resident experience. If you have any questions, feedback, or suggestions, please do not hesitate to contact us at hi@boulderthon.org.

Interactive Course Map

Half Marathon Course Map & Elevation
Full Marathon Course Map & Elevation
5k Course Map & Elevation
10k Course Map & Elevation
Kids Course Map & Elevation