Rockin' Rockwoods 53K and 1/2 Marathon

SEP
26
2026
Experience the technical trails of Greensfelder County Park at this cup-free event featuring a 53K ultramarathon, a half marathon, and a rucking division in Wildwood, Missouri.
Sat 26 Sep 2026
53 kilometers 13 miles

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Rockin' Rockwoods 53K and 1/2 Marathon

The 12th annual Rockin' Rockwoods trail race takes place in Greensfelder County Park, located in Wildwood, Missouri. Organized by Terrain Trail Runners, the event features multiple distances held across the scenic Green Rock Trail. The course consists of approximately 95% single-track trails with a mix of hard-pack dirt, loose uneven rock, and creek crossings.

Available distances include:

  • 53 km
  • 1/2 Marathon (approximately 13.1 miles)
  • 1/2 Marathon Ruck

The 53 km course is designed as two out-and-back sections with an elevation gain of approximately 5,200 feet. The 1/2 Marathon and Ruck distances follow an out-and-back route with roughly 2,200 feet of elevation gain. All events have a final time limit of 10 hours, with specific intermediate cut-off times enforced at various aid stations.

The event operates as a cup-free and zero-waste race. Participants must bring their own drinking receptacles, as no paper or plastic cups are provided at aid stations or the finish line. Additionally, runners are asked to bring their own mess kit, including a plate and utensils, for the post-race meal. Four manned aid stations are positioned along the course, stocked with water, electrolyte drinks, gels, and snacks.

Registered participants receive a custom hoodie if registered by the August deadline, a custom finisher medal (or a rucking patch for the Ruck division), and post-race food and beer. Awards are presented to the overall male, female, and non-binary finishers for the 53 km and 1/2 Marathon distances. Visit the organization's website for the most recent information.

53 km
53k
13 mi
1/2 Marathon Ruck
13 mi
1/2 Marathon

Events nearby

Free after dark social Halloween run in Chesterfield with treats, a free 4 Hands beer for runners 21 and older, raffle prizes and ghost stories.
Experience technical trails and rolling hills at Greensfelder Park with distance options ranging from 8 miles to a 50K ultra. This cup free event features a repeating loop format through scenic Missouri woodlands.
Free, beginner friendly guided trail running and hiking program in the St Louis metro from October 11 to December 20, 2026, with guided groups and ruckers welcome.
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