Boulder Half Marathon 2024 Route. Colorado springs, boulder, and denver are the most popular cities to run a colorado half marathon in. Boulderthon is a boston marathon qualifying (bq), usatf sanctioned event, measured by a level a usatf course measurer, representing the highest level of certification for a marathon race series.
To train for boulder half marathon, youโll need a personalized training plan and to build up your weekly mileage progressively. Runna offers running training plans for every runner and goal out there.