Leaky Hourglass Ultra

The Bleak Midwinter Endurance Run is a timed endurance event taking place at the Sac River Mountain Bike Trails in Springfield, MO. Participants can choose from four different timed options: 12, 6, 3, and 1 hour runs, all on a 4.25-mile loop trail featuring moderately technical terrain. The event em..

The Hard Times Trail Run, held at Little Sac Woods Conservation Area in Willard, MO, features a challenging 10-mile out-and-back course with significant elevation gain. Participants can choose from three distances: 10 miles, 20 miles, or 50K, each offering a unique blend of runnable sections, steep ..

The Frisco Railroad Run, organized by the Ozark Mountain Ridge Runners (OMRR), is a popular annual running event featuring multiple race distances: 50-mile, 50K, marathon, half marathon, and 8K. Set on the scenic Frisco Highline Trail in Willard, MO, the course is USATF certified and offers a flat, ..

The OVERNIGHT Rat Race - UNSANCTIONED is an extreme endurance running event taking place in Springfield, MO, from May 23 to May 24, 2025. Participants can choose between a 4-hour or 6-hour challenge, navigating the urban landscape without course markings or volunteer support. The race emphasizes str..

The 4 Fore 30 Infinity Backyard Ultra is an exciting endurance running event taking place in Macks Creek, MO. Celebrating its 8th year, this unique race follows the format of Big's Backyard Ultra, where participants must complete a 4.1667-mile loop within one hour, with the challenge continuing unti..

The Last Chance Ultra is an exciting running event taking place on December 6-7, 2025, in Springfield, MO. This fourth annual race offers participants the opportunity to complete various distances, including a 100 Miler, 50 Miler, 50K, and a 10 Miler. It serves as a perfect way to log those final mi..