2022 Colfax Logo

May 20-21, 2023

  Katie and Justin Colfax.JPG


Come to the Mile High City and celebrate the 17th running of Denver Colfax Marathon! This is the largest running weekend in the Rockies that includes a Marathon, Half Marathon, Urban 10 Miler, Marathon Relay and day before 5K.

Join a group of runners and walkers who also care about lung cancer. Sign Up for your preferred race distance (5K, 10 Mile, Half or Full Marathon) through the Colfax site (please choose us as your charity from the drop down) and set up your free fundraising page here by clicking the blue Register button above.

Team Member Details

Tiered Fundraising Benefits include:

$100 Raised

  • Official GO2 Endurance Team shirt
  • Personalized fundraising page 
  • Individual and team fundraising coaching
  • Professional online race training program through Kopf Training  

$500 Raised- you get the above PLUS:

  • Race week team dinner invitation for you and a guest
  • Additional event day swag and cool fundraising incentives

When you join our endurance team, your efforts spread awareness of lung cancer while raising much-needed funds for the patient services, legislative advocacy and clinical research projects of GO2 Foundation for Lung Cancer. Click here to learn more about your impact.


Questions? Email Susan Smedley, our Senior Manager of Community Engagement.