Rockin' Rockwoods 53K and 1/2 Marathon

The Rockin' Rockwoods 53K and 1/2 Marathon is an annual trail running event held at Greensfelder County Park in Wildwood, Missouri. Featuring a challenging course on the scenic Green Rock Trail, the race includes a 53K ultra, a 1/2 marathon, and a 1/2 marathon ruck division where participants carry a minimum 20 lb pack. The terrain is technical with steep hills, rocks, roots, and creek crossings, offering 95% single track.

Aid stations are spaced about every 5.5 miles, providing hydration and snacks. The event emphasizes sustainability as a cup-free race and offers custom medals, post-race food, and beer. It is known as one of the toughest trail races in St.

Louis. Visit the organization's website for the most recent information.