Mudderland, Kingsbury

Mudderland transmutes one of the Midwest's largest motocross tracks into a swampy test of endurance, challenging thrill-seekers across 3.5 miles of military-style obstacles. Unfurled across the site of a WWII munitions factory, the one-day, full-body assault sends participants running, climbing, and crawling through a lineup of natural barriers, including a 19-foot concrete wall that sprouted from a radioactive apple seed during the 1940s. As limbs splash through ponds, slither through tunnels, and flail wildly while soaring down monstrous slip and slides, spectators bask in the muddy melee from elevated bleachers and VIP viewing decks. Afterward, fresh water bursts from the course's showers to blast away dirt and reveal each participant's new layer of confidence.