Prepare for an unparalleled Memorial Day celebration at the BOLDERBoulder 10K on May 25, 2026, in Boulder, Colorado. Voted "America's All-Time Best 10K" by Runner's World, this iconic event draws over 50,000 participants and 100,000 spectators, solidifying its reputation as one of the largest and most acclaimed road races globally. The BOLDERBoulder delivers an electrifying party atmosphere, with live music, dancers, and enthusiastic crowds energizing every turn of the 6.2-mile course.

The course, winding through Boulder's vibrant neighborhoods and downtown at over a mile above sea level, offers a challenging yet rewarding experience. Runners will navigate predominantly paved urban terrain featuring a steady elevation gain, including a subtle climb in the early miles and a memorable uphill stretch leading into the grand finale. Seven aid stations along the route ensure ample water and Nuun hydration. The race culminates spectacularly inside the University of Colorado's Folsom Field, where tens of thousands of cheering fans welcome every finisher. This grand finish also hosts one of the nation's most significant Memorial Day Tributes, complete with a military flyover and skydivers, offering a moving and patriotic conclusion to your race.

Runners consistently praise the BOLDERBoulder for its exceptional organization, pioneered wave start system, and the continuous entertainment that makes the miles fly by. Typical race day conditions in late May feature pleasant highs around 74°F and lows around 46°F, with a minimal 12% chance of precipitation, providing ideal running weather for this festive challenge. Whether your goal is a personal best or simply soaking in the joyous atmosphere, the BOLDERBoulder 10K promises an unforgettable blend of competitive spirit and community celebration.