Loud Thunder 50

The Loud Thunder 50 is a trail running event taking place on April 19, 2025, at Loud Thunder Forest Preserve in Illinois City, IL. Participants can choose from three race distances: 50 miles, 50K, and a half marathon, all set against the scenic backdrop of the Mississippi River. The event emphasizes a low-key atmosphere, focusing on the runner experience with fully stocked aid stations, custom swag, and post-race refreshments.

Camping is available on-site, and the course features a mix of challenging terrain. Registration is online only, with no refunds or bib transfers. Visit the organization's website for the most recent information.