Blue Sky Marathon
Race Day Weather
Cool start, warm finish
Runners will face a cool start at 40°F, with temperatures gradually rising to 60°F by the finish. Light winds from the SSW at 7 mph will be a non-factor throughout the race. With low humidity at 29%, hydration should be managed, especially on the warmer late laps. Early laps will be cooler, while runners should prepare for significant warmth as they approach the finish.
This course climbs 988 ft to its high point and back, so we forecast it at 2 points, not just the start line. At 9:00/mi, you start at 40° and finish around 10:55 AM in 59°.
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Race Info
The Blue Sky Marathon is a 26.7-mile trail race in Fort Collins, Colorado, run on dirt trails between Horsetooth Mountain Park and Devil's Backbone Open Space along the Front Range foothills. The course has about 3,500 feet of elevation gain and loss, mostly singletrack with sections of rocky terrain and dirt road. First run in 2008, it is organized by Gnar Runners, which bills it as Fort Collins' original and only trail marathon. A half marathon (13.4 miles, 1,800 feet of gain) runs the following day over a shorter loop of the same terrain.
