Onesie Dash

Onesie Dash is a 1 Mile (1.6 km) event held in Red Feather Lakes, Colorado, on December 5, 2026, with a single start at 3:30 PM. One short distance, one afternoon slot, and a name that tells you what the dress code is.

Racing a mile is a genuinely different exercise from racing a 5K: the effort is close to maximal from the first strides, so a real warm-up is not optional. Fifteen minutes of easy jogging plus four or five strides at race pace will make the difference between a good opening quarter and a struggle. Pace it in halves, holding a touch back for the first 800 meters and spending everything after that. With a mid-afternoon start in the Colorado mountains in December, plan warm layers for before and after, and something you can actually run in for the mile itself.