Colfax Marathon
The Colfax Marathon (previously known as the Colorado Colfax Marathon) is an annual marathon foot-race held in Colorado, United States, since 2006. Significant portions of the course follow Colfax Avenue. History. About 6,000 people took part in the inaugural event in 2006. The 2011 Kaiser Permanente Colfax Marathon, Half Marathon and 5-person Marathon Relay were held on Sunday, May 15, 2011. The 2020 in-person edition of the race was cancelled due to the coronavirus pandemic, with all registrants given the option of running the race virtually or transferring their entry to 2021 or 2022. Similarly , the 2021 edition of the race, originally scheduled for May, was postponed to October due to the pandemic. Course. The initial course followed Colfax Avenue for almost the entire race. It started in Aurora, headed west through Denver, and finished in Lakewood. The course changed in 2008 to start and finish in Denver's City Park, with only portions of it on Colfax Avenue. The full marathon heads west to Lakewood and back; the half marathon east to Aurora and back. Other races. In addition to the main event, a half marathon, a relay and a 5K race also  take place. Colorado Colfax Kids Marathon. The Colorado Colfax Kids Marathon was a race like the Colorado Colfax Marathon, established in 2006. The run was for Kindergarten to 8th grade students. It was a run that is only . The students ran the other in training. The training lasted from February to early May. The race was usually planned to be held in the middle of May. The event was held at the Colorado Mills Mall. The students ran through a path in the parking lot around the mall area. The race was replaced with the Kids Run America program before  being cancelled altogether.