The 2025 BOLDERBoulder 10K welcomed 45,055 finishers from all 50 states and 18 countries, with cloudy skies and morning rain giving way to sunshine by the time the professional races began. Local standouts Nickolas Scudder and Sara Vaughn captured the citizen race titles. The race, which finished inside Folsom Field on the University of Colorado campus for the 43rd time in the race’s 45-year history, gave participants the chance to witness the exciting conclusions of the professional races and the always patriotic Memorial Day tribute, underscoring the spirit of one of America’s largest and most celebrated road races.