Boulderthon: Downtown Boulder Marathon & Half
Running is the heartbeat of Boulder — one of the three hallmark recreational activities of the community (along with cycling and hiking, of course).
Together, run the streets & trails of Boulder, and serve as one of the great training grounds for Olympians, world-class athletes, and leisure runners alike. But despite running being hardwired into Boulder’s DNA — there is no signature, city marathon, until now- the first-ever downtown Boulder Marathon & Half Marathon: The Boulderthon.
Want to Run Faster?
If you’re interested in improving your running and setting new personal bests, our preferred training partner (RunDoyen) can help!
RunDoyen offers effective training plans for 5k, 10k, Half Marathon, and Marathon distances. They have a special Boston qualifying program as well!
Each run training plan has individually calculated workouts for different levels of runners.
The plans have been designed and reviewed by the world class group of RunDoyen coaches.
View their training plans to find the right one for you, and get 15% off any training plan using the coupon code RUNGUIDES15View Training Plans
Find your running pace and splits, and learn if you can outrun dangerous animals with the RunGuides run pace calculator.