Green Ninja is trying to find every half marathon, marathon and longer distance out there to put into our race calendar.


2012-11-10 Fruita, Colorado (map)
Rim Rock Marathon Run through Colorado National Monument by Grand Junction


2011-03-12 Salida, Colorado (map)
Run Through Time Trail Marathon Early in the year for trails in Colorado - be prepared!


2012-05-06 Fort Collins, Colorado (map)
Colorado Marathon Follow the river down through a canyon for the first half
2012-05-12 Palisade, Colorado (map)
Grand Valley Marathon Run along the Colorado River and Grand Mesa on this out and back
2011-05-14 Gateway, Colorado (map)
Sky Mesa Pass Trail Marathon Trail race through red rock mesa country
2012-05-20 Denver, Colorado (map)
Colfax Marathon Urban tour of Denver, not just Colfax anymore
2012-05-27 Salida, Colorado (map)
Arkansas River Bluegrass Marathon Memorial Day weekend run on country roads around Salida
2012-05-28 Lake City, Colorado (map)
Mountaineer Marathon and Half Marathon


2012-06-03 Steamboat Springs, Colorado (map)
Steamboat Springs Marathon Net downhill from Hahns Peak down to Steamboat
2011-06-11 Pagosa Springs, Colorado (map)
Turkey Track Trail Marathon Easy trail run through singletrack and doubletrack
2012-06-17 Estes Park, Colorado (map)
Estes Park Marathon First American cup-free road marathon up high in the Rockies!
2012-06-30 Leadville, Colorado (map)
Leadville Trail Marathon Run above 13,000 feet past old mines


2011-07-09 Aspen, Colorado (map)
Aspen Valley Marathon Run downhill on the paved Rio Grande Trail to Basalt
2011-07-16 Silverton, Colorado (map)
Kendall Mountain Marathon Go up Kendall Mountain, then come right back down - twice!


2011-08-13 Ouray, Colorado (map)
Mount Sneffels Marathon Betwen Ouray and Ridgway, Colorado
2012-08-19 Manitou Springs, Colorado (map)
Pikes Peak Marathon Climb all the way to the top of Pikes Peak and then run down
2011-08-27 Aspen, Colorado (map)
Aspen Backcountry Marathon High country dirt trails above Aspen await!
2011-08-28 Silverton, Colorado (map)
Silverton Alpine Marathon Follow the Alpine Loop jeep roads through ghost towns


2012-09-03 Colorado Springs, Colorado (map)
American Discovery Trail Marathon Beautiful point to point net downhill on a gravel trail along the Front Range
2011-09-19 Crested Butte, Colorado (map)
Mountain Air Marathon Crested Butte to Garrison
2012-09-22 Denver, Colorado (map)
Rock and Roll Denver Marathon Great tour of Denver's parks and neighborhoods


2012-10-06 Colorado Springs, Colorado (map)
Xterra Marathon of Trail Races - Cheyenne Mountain Two fun loops in a beautiful state park
2012-10-21 Boulder, Colorado (map)
Boulder Marathon Held on the dirt roads behind Boulder