45th Annual Bolder Boulder 10KM Is Pure Madness!

Over 50,000 runners and walkers filled the streets of Boulder, Colorado for the 45th annual Bolder Boulder 10K, one of the largest and most beloved road races in the United States. More than just a race, this Memorial Day tradition celebrates community, remembrance, and unity, bringing together people from all 50 states and over a dozen countries. From elite athletes to first-time participants, everyone had a place in this historic event. 🇺🇸👟 #BolderBoulder #BolderBoulder10K #MemorialDay #ColoradoEvents #BoulderColorado #10KRace #RunningCommunity #TrackAndField #RoadRace #MemorialDayTribute #USAEvents2025 #Athletics2025 #FitnessEvent #BolderBoulder2025 #RunnersOfInstagram