Run Boulderthon: The Boulder Marathon

Run Boulderthon is a premier marathon series held in Boulder, Colorado, recognized as one of the top-rated marathons in the United States. The event features a stunning course set against the backdrop of the Rocky Mountains, attracting thousands of runners from across the globe. Boulderthon includes various race options, such as a marathon, half marathon, 10K, and 5K, all celebrated for their scenic views and vibrant atmosphere.

The event has received accolades for its organization and runner experience, making it a must-attend for both seasoned and novice runners. Participants can enjoy a festive after-party and the charm of downtown Boulder. Visit the organization's website for the most recent information.