Rockin' Rockwoods 53K and 1/2 Marathon

Pacific, United States • 13 Sep 2025

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 half marathon, and a half marathon ruck division where participants carry a minimum 20-pound pack. The terrain is technical with steep hills, rocks, roots, and creek crossings, offering 95% single-track trail running.

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.

Race information

53 km
5200 m+
53k
13 mi
2200 m+
1/2 Marathon
13 mi
2200 m+
1/2 Marathon Ruck
Visit the organization's website for the most recent information.
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