Castlewood Cup
Ballwin, United States • 31 Jan 2026
Event
The Castlewood Cup is a trail race held on January 31, 2026, at Castlewood State Park in Ballwin, Missouri. The event is in its 18th year and features a 15 km course run largely on single-track trails. The course includes uphills, downhills, switchbacks, and some flat sections. Organizers provide a sweatshirt and a finisher medal for 2026; designs are pending. Finisher photos and video will be available, and live runner tracking is offered via mobile and social media.
Logistics
Packet pickup is scheduled before race day at a Big River running store location in Manchester, Missouri, and on race morning at the Castlewood State Park Special Events Area. The listed entry price for the 15 km event is $59; the price increases after December 22, 2025. The Castlewood Cup is part of the Big River Trail Series; series points are tallied for runners who participate in three of the six designated events. The race is presented by Big River Race Management. Post-race amenities include a BBQ lunch, snacks, beer for those 21 and over, and live music when weather permits. Visit the organization's website for the most recent information.