Boulder Rez Marathon
This amazing run course will take you alongside the Boulder Reservoir, remaining mostly on dirt roads and trails. The course is flat with only 200 feet of gain, and will […]
Events
7 events found.
Colorado Multisport Calendar
Half Marathon
Events
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Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United States
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Ralston Creek Half-Marathon & 5K
Arvada Arvada, CO, United StatesThe Ralston Creek Half-Marathon & 5K has become Colorado’s premier winter half marathon! Finisher Medals for Half Marathon finishers and a generous 4:30 cutoff time. Courses follow a scenic mix […]
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Three Creeks Half Marathon
Bear Creek Lake Park (Lakewood) 15600 W. Morrison Road, Lakewood, CO, United StatesRacing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic! Travel on foot through […]
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Boulder Rez Half
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesThis spring race features a spectator-friendly Half Marathon, 10K and 5K course. Attracting athletes from all over the west due to its phenomenal scenery, glamorous finisher medals, perfect running temperatures […]
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NOCO Half Marathon & 10K
Boyd Lake State Park (Loveland) 3720 N County Road 11-C, Loveland, CO, United StatesSpring is the season of renewal and running. We hope you join us for a fun adventure that embodies the spirit of springtime at the beautiful Boyd Lake State Park! […]
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Timberview Trail Run
Boyd Lake State Park (Loveland) 3720 N County Road 11-C, Loveland, CO, United StatesCrisp morning air and a summer sunrise in Colorado. YES PLEASE! Join us on the foothills at Lory State Park for a fun & beautiful morning trail race experience. This […]
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Boulder Rez Marathon
Boulder Reservoir 5275 Reservoir Road, Boulder, CO, United StatesThis amazing run course will take you alongside the Boulder Reservoir, remaining mostly on dirt roads and trails. The course is flat with only 200 feet of gain, and will […]
