Boulder Sunset Run

The Boulder Sunset Run is a scenic endurance event held at Boulder Reservoir in Boulder, Colorado. Featuring both 5K and 10K distances, the courses are flat, fast, and out-and-back, with runners crossing the Boulder Reservoir dam. The 5K offers two fueling stations near each mile marker, while the 10K provides six fueling opportunities to support runners.

The event emphasizes sustainability as a zero-waste race and enforces rules such as no strollers, headphones, dogs, or glass bottles on the course. This popular summer race combines beautiful views with a competitive atmosphere, making it a highlight of BBSC’s endurance events. Visit the organization's website for the most recent information.