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Run the annual sell-out series, Boulderthon - Colorado's largest fall race weekend! 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, Boulderthon drew over 6,000 runners from all 50 states and 18 countries. The 2024 event is expected to sell out again. Register today!
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Event Venue & Nearby Stays
Boulderthon, Himali, 1422 Pearl St, Boulder, CO 80302, United States,Boulder, Colorado