Colorado Colfax Marathon
The Colorado Colfax Marathon is an annual marathon foot-race established in 2006 in Colorado, USA. The course followed Colfax Avenue for 26.2-mile (42.2 km) starting in Aurora, heading west throu...
Pikes Peak Marathon
The Pikes Peak Ascent and Marathon is a racing event that begins at the base of Pikes Peak, in Manitou Springs, Colorado, and climbs over 7,815 feet (2382 m) to the top of the 14,115 foot (4302 m) pea...
Pikes Peak Marathon - Wikipedia
Hardrock Hundred Mile Endurance Run
The Hardrock Hundred Mile Endurance Run is an ultramarathon 100.5 miles (161.7 km) in length, with 33,000 feet (10,000 m) of climb at an average elevation of over 11,000 feet (3,400 m)....
Hardrock Hundred Mile Endurance Run - Wikipedia
Bolder Boulder
The Bolder Boulder is an annual 10-kilometer run in Boulder, Colorado. The most recent race featured over 54,000 runners, walkers, and wheelchair racers, making it the largest race in the US in which ...
Bolder Boulder - Wikipedia
Colorado Marathon
The Colorado Marathon (formerly known as the Fort Collins Old Town Marathon) is an annual marathon held in Fort Collins, Colorado. The majority of the course goes down the Poudre River Canyon in north...
Colorado Marathon - Wikipedia
Leadville Trail 100
The Leadville Trail 100 Run (aka The Race Across The Sky or the LT100) is an ultramarathon held annually on trails and dirt roads near Leadville, Colorado, through the heart of the Rocky Mountains. Fi...
Leadville Trail 100 - Wikipedia
Colorado Relay
The Colorado Relay is an annual nearly 200-mile team relay race held in Colorado, United States and is designed for athletes of all abilities. 2011 will mark the event's 14th Anniversary. Participants...
Colorado Relay - Wikipedia