Produced by Terrain Trail Runners, Rockin' Rockwoods is a foot trail race with distance options of 53K and 1/2 Marathon/1/2 Marathon RUCK held at Greensfelder County Park traversing both Rockwoods Range and Rockwoods Reservation conservation areas in Wildwood, Missouri.
The Rockin' Rockwoods 53K course will be two out and back sections across the scenic Green Rock, DeClue and Fox Run Trails with 5,200ft of elevation gain.
The Rockin' Rockwoods 1/2 Marathon/1/2 Marathon RUCK course will be an out and back across the Green Rock, Eagle Valley and Deer Run Trails with 2,200ft of elevation gain.
The Rockin' Rockwoods 53K, 1/2 Marathon & 1/2 Marathon RUCK are the toughest trail events you will run in St. Louis, MO.
We guarantee it!
The terrain ranges from hard-packed dirt to lose, uneven rock and extremely hilly, technical trails.
This is a challenging course of steep grades and rolling hills. Runners will be treated to 95% singletrack with rocks, roots, and creek crossings that make for a fairly technical out-and-back run.
In addition, we are proud to be part of the 50K Mashup SLAM!
Rockin' Rockwoods is now part of the Trail Mix Fund!
In an effort to improve diversity in trail racing and remove a potential barrier for the under-served and under-represented, the Trail Mix Fund pays the race registration fee for runners who cannot afford it or aren’t sure they belong in the sport.
We also believe that there are more BIPOC & LGBTQ+ people who would like to race and would enjoy being part of the community but aren’t comfortable taking that step of signing up to race. Waiving the registration fee alone won’t solve this problem, but maybe it can help some.
Terrain Trail Runners-STL's partnership with the Trail Mix Fund began in December 2025, and we hope you'll consider donating or applying!
2026 RACE DAY REGISTRATION
We will be accepting onsite/race day registrations for the 2026 edition of Rockin' Rockwoods 53K,1/2 Marathon and 1/2 Marathon RUCK Distances!
Race Day Registration for 53K - $180.00
Race Day Registration for 1/2 Marathon & 1/2 Marathon RUCK - $150.00
**SWAG ONLY if sizes are available FOR RACE DAY REGISTRATIONS** - CASH ONLY
~Swag is not guaranteed for race day registrations~
Race Day/Onsite Registration will begin at 6AM on September 26, 2026!
*Included in your RACE DAY REGISTRATION
- Custom Finisher Medal
- Post-Race Lunch and Beer!