Colorado 13er (Half Marathon/10k/5k)
Sun, Jun 7, 2026, 2:30 AM MDT
- Type
- Run
Finish signup on the organizer site (check fees and dates there).
Race feel
Experience the best of both worlds on a scenic, well-supported course with spectacular Flatirons views, perfect for all runner levels.
- Fun
- Scenic
Fun
ScenicThe Colorado 13er offers a unique blend of trail running and road racing, creating a truly enjoyable and well-supported experience. Runners of all levels, from seasoned athletes to first-timers, will appreciate the clear communication and accessible nature of this 13.1, 10k, and 5k event. The exceptionally scenic, looped course winds through gorgeous Louisville, Colorado, providing spectacular views of the Flatirons. Expect a kind-to-your-body race with excellent support and a strong sense of accomplishment.
What to expect
- A looped course offering spectacular views of the Flatirons.
- Enjoy 9 miles of flat, crushed gravel, supported by 10 water stations and 5 port-a-johns.
- Receive a 13.1 finisher medal, gender-specific performance tee, and iced towels at the finish.
From the organizer
The Colorado 13er is THE event where the best parts of trail running and road racing combine to create a truly enjoyable, kind-to-your-body, well-supported 13.1 race! Seasoned runners and first-timers alike appreciate the excellent communication from the 13er race crew who make this event accessible for athletes of all levels.
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Join us for this exceptionally scenic, looped 13.1 course which runs through gorgeous Louisville, Colorado!
We designed this course so that you can enjoy all of the spectacular views of the Flatirons that Colorado has to offer. Come see for yourself!
Groups/Teams/Families: Save $5 per person for groups of 5 or more! See our FAQ page for more questions!
Click the drop-down menu under "race info" for all race details! Any questions, please email us at info@colorado13er.com
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Here's the good stuff!! - 10 water station passes - 5 port-a-john passes - 9 miles of FLAT, crushed gravel - nearby, free parking - spectator friendly - 13.1 finisher medal - 10k or 5k options available - iced towels at the finish line - gender-specific performance tees for every registrant - chip timed with texted results - live, real-time results posted online - 13.1 miles of million-dollar views AND - the amazing sense of accomplishment you can only get from running 13.1! (or 5k or 10k!)
Chip Timed
Medal