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Double Chubb 50K

St. Louis, United States • 11 Apr 2026

The Double Chubb is a trail running event held at West Tyson County Park in Eureka, Missouri, offering 50K, 25K, and 8-mile distances. The course features multiple aid stations stocked with standard ultra foods and electrolytes, promoting a cup-free, environmentally friendly race where runners must bring their own hydration. The event has a relaxed atmosphere with a roughly nine-hour cutoff time and encourages participants to carry extra food and water. Drop bags are provided at the start and transported to the finish, which is also the halfway point for the 50K. Organized by the Saint Louis Ultrarunners Group, the race supports local trail maintenance and community organizations. Visit the organization's website for the most recent information.

United States Missouri St. Louis

Race information

Website Registration
50 km
50k
25 km
25k
8 mi
Visit the organization's website for the most recent information.
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