- Start by visiting the Colfax Marathon website.
- Use the drop-down menu to designate Denver Zoo as your Charity Partner, then follow the prompts. Click here to see what this registration looks like.
- Any race is eligible for the Charity Partners program including the 5k, Urban 10-Miler, Half and Full Marathon. Already registered? It’s easy to go back into your account and add a designation! Email support@denverzoo.org for assistance.
- Get wild swag by fundraising for Denver Zoo or making a direct donation!