Chilly Willy Half Marathon - Denver

The Chilly Willy 5K/10K/Half Marathon in Denver is set to take place on January 26, 2025, at Chatfield State Park in Littleton, CO. This winter running event features multiple race options, including a 5K, 10K, and half marathon, as well as virtual participation options. All participants will receive a long-sleeve race shirt and a finisher medal, with awards for top finishers in various categories.

The course is designed to be flat and fast, making it suitable for runners of all levels. Registration is available online, and early sign-ups are encouraged to guarantee race swag. Visit the organization's website for the most recent information.