Aspen Backcountry 50K
Aspen Backcountry 50K race day weather
Cool start — fast day potential, big temp swing, chance of rain
A cool 49°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Temps will climb significantly to 71°F by later miles, so expect fading conditions as the race progresses. Light winds shouldn't be a major factor for pacing. There's a chance of rain, so have a backup gear plan ready.
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Get your personalized Aspen Backcountry 50K race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
About the Aspen Backcountry 50K
The Aspen Backcountry 50K starts and finishes at Rio Grande Park in Aspen on the Saturday of race weekend. It follows the marathon course through Henry Stein Park, Four Corners, Hummingbird, Hunter Creek and Smugglers, and adds an out-and-back to McNamara Hut, part of the 10th Mountain Division hut system. The route runs almost entirely on dirt trails with long climbs and descents above town, and tops out above 10,000 feet with views of the Elk Mountains.
