• 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;Read More

    • Salida Big Friggin Loop

      Submitted by 303cycling on February 7th, 2019

      Salida   Please make sure to read all rules for this.  This is fully unsupported and you will need to be self-sufficient in order to complete this.  The rules are located HERE. Singletrack, high elevation, back country self supported endurance epic.Read More

      • BME Santa Fe

        Submitted by 303cycling on January 31st, 2019

        Santa Fe, NM   The Big Mountain Enduro 2019 season opener will kick off in Santa Fe, N with a two-day backcountry race entailing upwards of 8’000 feet of long rocky descents. Expect the raw terrain this event is knownRead More

        • Fuel and Hydration for Leadville 100

          Submitted by 303cycling on July 31st, 2018

          Boulder   If you are wondering how your digestive system is going to handle the shift from short to long endurance events like the Leadville 100, come see Allen Lim, PhD throw down some serious strategies to optimize your hydrationRead More

          • Colorado Trail Classic

            Submitted by 303cycling on April 23rd, 2018

            Durango   Please make sure to read all rules for this.  This is fully unsupported and you will need to be self-sufficient in order to complete this.  The rules are located HERE. Event details and registration here

            • Monarch Crest Enduro

              Submitted by 303cycling on March 29th, 2018

              Salida   From the Monarch Crest Endurance FB page: Okay, so here is the tentative plan for the 2018 MCE. We are planning on moving the event to September 14 thru 16 In addition we will be eliminating a stageRead More

              • Monarch Crest Enduro

                Submitted by 303cycling on March 29th, 2018

                Salida   From the Monarch Crest Endurance FB page: Okay, so here is the tentative plan for the 2018 MCE. We are planning on moving the event to September 14 thru 16 In addition we will be eliminating a stageRead More

                • Monarch Crest Enduro

                  Submitted by 303cycling on March 29th, 2018

                  Salida   From the Monarch Crest Endurance FB page: Okay, so here is the tentative plan for the 2018 MCE. We are planning on moving the event to September 14 thru 16 In addition we will be eliminating a stageRead More

                  • Salida Big Friggin’ Loop

                    Submitted by 303cycling on March 14th, 2018

                    Salida   Please make sure to read all rules for this.  This is fully unsupported and you will need to be self-sufficient in order to complete this.  The rules are located HERE. Singletrack, high elevation, back country self supported endurance epic.Read More

                    • BME Series Finals: Aspen Snowmass

                      Submitted by 303cycling on March 7th, 2018

                      Aspen   Aspen Snowmass will host the BME Finals for 2018. The two-day event will blend high altitude riding adventures mixed with some of the biggest descents and best riding in the area. Expect a heavy pro field and someRead More