Join our 15th Anniversary and 20,000 runners - with a Marathon, Half Marathon, 10 Miler, Marathon Relay, and 5K. Scenic courses highlighting Denver's best landmarks - downtown, 7 miles of water, Denver Zoo (1 mile through the Zoo on the half), stadium run-through, firestation run-through and more! Finish Line Festival with great food, beverages, live music, Corporate Village, Charity Village, and Running Club Village. Spectacular Start/Finish area on a lake in Denver's spectacular City Park with mountain and downtown views. Main races Saturday (due to Broncos home game and rescheduling from our normal May date) and 5K on Sunday. Festivites all week long leading up to Race Weekend. 2022 will return to May.