Boulderthon: The Boulder Marathon
COLORADO'S PREMIER FALL EVENT
Just in: Boulderthon rated top 10 in America by USA Today
After nearly tripling in size last year and selling out, Boulderthon sets new 10,000 runner cap
Boulderthon is one of the top-rated marathons in the United States
Named among the Best Fall Marathons by Runner's World, #5 Best Half Marathon in the US by Active, as well as #1 Best in Colorado and one of the "Most Beautiful Marathons in the World" by HalfMarathons.Net, Boulderthon drew over 6,000 runners from all 50 states and 18 countries in 2023, and has doubled in size every year since its inception.
In 2024, USA TODAY named Boulderthon’s 5K the #5th best in the country, while simultaneously announcing its Half Marathon as the #8th best in the US, in its 2024 10Best Readers’ Choice awards. The lists are curated by USA Today 10Best editors reviewing thousands of races across the country, narrowing it down to the top 20 in each category by a panel of expert runners, and then voted on by readers to determine the winners.
A boutique marathon experience with big-city energy + amenities tucked away in the foothills of the Rockies
An award-winning race series staged in the Happiest City in America - National Geographic
RACES
MARATHON
HALF MARATHON
10K PRESENTED BY CHERIBUNDI
HEART TO HEART 5K BY BCH
KIDS RUN
VIP BY LULULEMON
Race Start Times
Half/Full Marathon: 7:00am
5K: 7:45am
10K: 8:25am
Kids Run: 9am
Race Start Locations
Half/Full Marathon: 19th and Pearl, Boulder, CO 80302
5K: 21st and Pearl, Boulder, CO 80302
10K: 19th and Pearl, Boulder, CO 80302
Kids Run: 21st and Pearl, Boulder, CO 80302
Proud to welcome the following artists, presented under the Xcel Power-Up Cheer Stations program. The first spectators will receive special giveaways and swag from Boulderthon! Come on out and support our runners.
ELVIS - Aaron Black
JC Unplugged
Wylie Jones
DJ Princess Wallace
Gregg Green
Michael DeCapua
Eric Ottem Jazz Unit
Jami McNeil
SK8 D8
Spencr DeJaynes
Awards
Top 10 Overall receive Top 10 Finisher Award & 50% off Boulderthon 2025 for Half & Full Marathon.
Top 3 Male & Top 3 Female Overall Finishers win prize money for Half & Full Marathon. Top 3 Awards are based on Gun Time.
Top 10 Overall receive Top 10 Finisher Award & 50% off Boulderthon 2025 for Half & Full Marathon. Top 10 are based on Gun Time. Age Group Awards are based on chip time.
Top 10 Finishers are not eligible for Age Group Awards for Half & Full Marathon.
There are no Top 10 Finisher Awards, Age Group Awards or prize money for the Kids Run, 5K, or 10K.
Race Fee: $36.38-$298.53
