BOLDERBoulder 10K
The BOLDERBoulder 10K is one of the largest and most beloved 10K races in the world — billed as "America's All-Time Best 10K" and drawing more than 50,000 participants every Memorial Day to Boulder, Colorado. Founded in 1979 by Olympic marathoner Frank Shorter, the race has become a Boulder institution that combines elite-level international competition with a costume-filled community festival. The Famous Wave Start Because of its massive field, BOLDERBoulder uses an innovative wave-start format with more than 100 waves separated by