Inaugural Boulderthon is confirmed for October 10th, 2021. Register now.
HOMERUNBE THE FIRSTABOUT USCHALLENGESVOLUNTEERPARTNERBLOGVIRTUAL LEADERBOARDREGISTER

FIRST-EVER BOULDER MARATHON

& HALF MARATHON WITH A DOWNTOWN FINISH

10.10.21

REGISTER NOW
LEARN MORE
SCROLL
SCROLL
SCROLL
SCROLL
SCROLL
SCROLL
BOULDERTHON®
A STRONGER FASTER BOULDER CO. PRODUCTION
1420 PEARL ST.
BOULDER, CO 80302

© 2020 Stronger Faster Boulder Co.

Based in Boulder, Colorado, Stronger Faster Boulder Co. is a Colorado non-profit organization and federally-recognized as a 501(c)(3) tax-exempt foundation, EIN # 84-2863972. Donations and contributions are tax-deductible as allowed by law.