2 Day Mile High Challenge

Super popular in 2019, it’s back again!  Run an individual race on Sunday and the 5K on Saturday, and you’ll receive our Colfax 2-Day Mile High Challenge medal as well as your Sunday medal.

2 Day Mile HIgh Challenge

Click here for a high res photo!  Run Saturday and the marathon, half or urban 10 on Sunday and you’ve completed the Mile High 2 Day Challenge.  You will receive the 2-day medal  – 3D holographic look made of antique silver!

Register Now for Sunday and Saturday

Want to do the 2 day challenge?

Not yet registered? Simply click here to register for the marathon, half or urban 10 miler.  There is a question on the registration page asking if you’d like to join the Colfax Mile High Challenge.  Check “yes”, and you’ll be set!

Already registered for Sunday and want to add the challenge? Simply click here to register for the 5K.

2 Shirts and 2 Medals

Yes – you receive 2 shirts and 2 medals!  Pictured here is the 5K shirt from 2019.