Description

We believe Boulder, one of the great running hubs of the country, deserves a world-class marathon series. The Boulder Marathon series features a world-class 5K, 10K, Half Marathon, and Full Marathon. Tucked away in the foothills of the Rockies in the stunning running mecca of Boulder, participants can run the streets Olympians train on, then celebrate at an epic After Party in Downtown Boulder on the Pearl Street Mall! Boulderthon is one of the top-rated marathons in the United States: named #5 Best Half Marathon in the US by Active, Best Fall Marathons by Runners World, as well as #1 Best in Colorado and #13 Most Beautiful Marathon in the World by HalfMarathons.Net, Join us on Sunday, September 29th to run in our 5K, 10K, half or full marathon or sign up to volunteer today!