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Loud Thunder 50

Illinois City, United States • 19 Apr 2025

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.

United States Illinois Illinois City

Race information

Website Registration
50 mi
2012 m+
50 Miler
50 km
1219 m+
50k
13 mi
579 m+
1/2 Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

4sta Hike

Illinois City

4sta Hike is the 8th annual running held at Loud Thunder Forest Preserve near Andalusia, Illinois, along the Mississippi River. The event features a 1-mile loop that runners may repeat for as long as the four-hour time limit allows. A hard course (about 304 feet of gain and loss per loop) is favored..