• Breck 100

    Submitted by 303cycling on February 21st, 2019

    Breckenridge   Welcome to Colorado’s premier off-road endurance race, the 15th annual Breckenridge 100. This incredible course climbs 13,000 feet over 92 miles.  Not quite ready for the Ultra?  Race the Marathon distance 100K, the XC distance 32 mile loop; or enter a two or three-person relay team.  Part of the NUE – National UltraRead More

    • Ridgeline Rampage

      Submitted by 303cycling on January 29th, 2019

      Castle Rock   Come out for the 10th annual spring fling on the grassy lawn at the Phillip S. Miller Amphitheater. Brink your blanket, spread out on the lawn and cheer on the racers. This ~12 mile circuit includes a bit of the new Phillip S. Miller trail system, as well as the old RidgelineRead More

      • Sasha and the Leadville 100 MTB

        Submitted by 303cycling on July 26th, 2018

        303Cycling has caught up with Sasha to ask her to re-count training for the 100 and the upcoming stage race. Read more

        • Breck 100

          Submitted by 303cycling on January 18th, 2018

          Carter Park, Breckenridge   Welcome to Colorado’s premier off-road endurance race, the 13th annual BRECK 100. This incredible course climbs 13,719 feet over 100 miles.  Not quite ready for the Ultra 100?  Challenge your abilities and ride the B-68 Marathon, the B-32 XC, or enter a two or three-person relay team! We’ve linked together an amazing networkRead More

          • Battle the Bear

            Submitted by 303cycling on January 18th, 2018

            Bear Creek Lake Park, Lakewood   Distances for all abilities and ages, including the 3-person Relay Team discipline.  The intimate venue and Pit Zone offers a fantastic setting for hot racing action and spectating.  The fast 11.5 mile loop that encircles Bear Creek Lake Park favors a taste for speed, with five short punchy climbs and rollingRead More

            • Ridgeline Rampage

              Submitted by 303cycling on January 16th, 2018

              Castle Rock   Come out for the 9th annual spring fling on the grassy lawn at the Phillip S. Miller Amphitheater.   Beach balls, hula hoops, and hot racing action. Bring your blanket, spread out on the green lawn and cheer on the racers. This lengthened 16-mile circuit includes the new Phillip S. Miller trail system,Read More

              • Breck 100

                Submitted by 303cycling on May 4th, 2017

                Breckenridge   Welcome to Colorado’s premier off-road endurance race, the 12th annual BRECK 100. This incredible course climbs 13,719 feet over 100 miles.  Not quite ready for the Ultra 100?  Challenge your abilities and ride the B-68 Marathon, the B-32 XC, or enter a two or three-person relay team! We’ve linked together an amazing network of backcountryRead More

                • Battle the Bear

                  Submitted by 303cycling on April 19th, 2017

                  Lakewood   Distances for all abilities and ages, including the 3-person Relay Team discipline.  The intimate venue and Pit Zone offers a fantastic setting for hot racing action and spectating.  The fast 11.5 mile loop that encircles Bear Creek Lake Park favors a taste for speed, with five short punchy climbs and rolling big ring single-track.  ThereRead More