About This Race
The Double Chubb is a gritty, scenic ultramarathon held in Eureka, Missouri, that challenges runners with two out-and-back loops along the rugged Chubb Trail. Traversing the scenic bluffs and bottomlands of the Meramec River, the race offers a punishing mix of technical single-track, steep limestone 'steps,' and flat river-side sprints.
What Makes It Unique
- Active Railroad Crossings: Runners must navigate two high-speed train crossings where extreme caution is mandatory, adding a unique industrial hazard to the natural trail setting.
- The Quadruple Bypass: The race maintains a specialized high-water reroute known as the 'Quadruple Bypass' to ensure the event proceeds even when the Meramec River floods its banks.
- The Steps Landmark: A famous course highlight is a grueling mile-long series of steep, rocky climbs and limestone stairs that test the vertical endurance of even veteran trail runners.