The course takes you through the beautiful back roads of Boulder, Colorado at the foothills of the Flatirons, before winding you to Downtown Boulder for an epic, one-of-a-kind finish on the historic Pearl Street Mall! Boulderthon is the perfect fall race to enjoy Boulder, Colorado, named the happiest & fittest city in America.
The Boulderthon - Boulder Marathon was the 80th largest marathon in the U.S. last year and was the 91st largest in 2022.
This year 0.3% of finishers qualified for the Boston Marathon and 3.1% of runners qualified for Boston in 2023.
This gives the Boulderthon - Boulder Marathon the 399th highest percentage of Boston Marathon qualifiers in the U.S. last year and the 370th highest percentage so far in 2024.
Its Course Score of 91.81 ranks it as the 428th fastest marathon course in the U.S. and the 7th fastest course in Colorado.
The typical race time temperature and humidity levels are within the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Boulderthon - Boulder Marathon a PR Score of 91.81. This PR Score ranks it as the 422nd fastest marathon in the U.S. and the 7th fastest in Colorado.
Learn more about PR Scores and Course Scores on the FAQ page.
Boulderthon - Boulder Marathon Elevation Chart
Max Elevation: 5409 feet (1649m) Min Elevation: 5068 feet (1545m)
Hotel & VRBO Accommodations for the Boulderthon - Boulder Marathon
View available accomodations around the Boulderthon - Boulder Marathon Finish Line and Course. Book your Reservation now before the best places are sold out.
For a better mobile or desktop experience:
How Fast Can You Go?
If you ran the Boulderthon - Boulder Marathon in 5:14:00, what would your time in other marathons be?
See how your race times would compare on other marathon courses with our time conversion tool.
