The Boulderthon(r) was created by an avid New York Road Runners runner to spread the joy of marathons.
We believe Boulder, one of the great running hubs of the country, deserves a signature, premier marathon. We believe:
- Marathons bring people together, and are some of the most fun, memorable & inspiring days of the year in cities, for runners and spectators alike
- Promoting the tremendous power of running to inspire, transform & improve lives
- Sharing the community & beauty of Boulder, CO with the world
- Bringing people together over health & wellness for uniquely memorable experiences