Double Chubb 50K
St. Louis, United States • 3 Apr 2027
Chubb Trail Races - West Tyson County Park, St Louis MO
Chubb Trail Races is a set of trail events held at West Tyson County Park in Eureka, near St Louis, Missouri. The event offers multiple distances and a ruck division that follows the 25K course.
- 50K
- 25K
- 25K RUCK (20 pound minimum)
- 8M
The ruck division requires participants to carry at least 20 pounds (not including food and water). Packs are weighed at the start. Ruckers and runners follow the same 25K course and finishers of that event receive a finisher's medal.
Aid stations are placed along the course at approximately 3.5M, 8M, 12.5M, 16M, 19.5M, 24M and 28.5M and provide standard ultramarathon food and fluids. The race is cup free; participants must bring a personal bottle or hydration system to refill at aid stations.
There is an overall cutoff of about nine hours for all races. For the 50K, the cutoff for the first loop is about four hours. Packet pickup is scheduled the day before at a local running store and on race day at the park entrance. Bib transfers are allowed until 2027-03-31 following the event’s transfer procedure. Registrations are nonrefundable; a drop from 50K to 25K is permitted up to one week before the event but late drops are ineligible for awards. Unclaimed drop-bag items will be donated. Visit the organization's website for the most recent information.