Join us in the 9th year of 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!

This is the second year of a five year series of collectible shirts and medals; you don't want to miss out!

See our COVID protocols and guidelines in place at the 13er by CLICKING HERE. Any questions, please email us at info@colorado13er.com