Double Chubb 50K

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 race features a relaxed atmosphere with a roughly nine-hour cutoff time and multiple aid stations stocked with standard ultra foods and electrolytes. Participants must bring their own hydration as the race is cup-free.

The course includes a first loop cutoff at about four hours for 50K runners. Drop bags are provided at the start and transported to the finish, which is also the halfway point for the 50K. The event is organized by the Saint Louis Ultrarunners Group and supports local trail organizations. Visit the organization's website for the most recent information.