Boulderthon: Downtown Boulder Marathon & Half

Boulderthon: Downtown Boulder Marathon & Half
Date Oct 2021 (TBD)
Distance Half-marathon, Marathon
Course Type Road

Race Information

Running is the heartbeat of Boulder — one of the three hallmark recreational activities of the community (along with cycling and hiking, of course).

Together, run the streets & trails of Boulder, and serve as one of the great training grounds for Olympians, world-class athletes, and leisure runners alike. But despite running being hardwired into Boulder’s DNA — there is no signature, city marathon, until now- the first-ever downtown Boulder Marathon & Half Marathon: The Boulderthon.

Want to Run Faster?

Get Personalized Online Training with Your Ideal Running Coach!

Finding the right coach can make achieving your running goals a reality.

Whether it’s running your first 5k, qualifying for the Boston Marathon or even the Olympics, there’s nothing more important than finding the right coach to provide the proper training tailored just for you.

Our friends at RunDoyen have recruited the top running coaches in the industry who have a proven record of training runners to crush their goals on race day!

Get started by using their custom matching program and find out which world-class running coach is the best fit for you!

Get Matched

Pace Calculator

Find your running pace and splits, and learn if you can outrun dangerous animals with the RunGuides run pace calculator.

Tell us your race tips