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
