Rockin Rockwoods 53K and 1/2 Marathon

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!

INTRO

The 12th annual Rockin' Rockwoods trail race. Hosted in Greensfelder County Park on September 26 2026, in western St. Louis County, Missouri. This race is presented by Terrain Trail Runners . We are also a part of the 50K MASHUP TRAILRACE SERIES Visit our page for more details!

LOCATION

Greensfelder County Park 4515 Hencken Road, Wildwood, MO 63069 – Start/Finish at Muckerman Shelter

COURSE DESCRIPTION

The Rockin' Rockwoods 53k, 1/2 Marathon and 1/2 Marathon RUCK are simultaneous trail races that will be held across the scenic Green Rock Trail. The terrain ranges from hard pack dirt to loose uneven rock and extremely hilly, technical trails. This is a challenging course of steep grades and rolling terrain. Runners will be treated to 95% single track with rocks, roots and creek crossings that make for a fairly technical out and back run. The Rockin' Rockwoods 53K course is a combination of two out and back sections with an approx. elevation gain of 5,200ft and 1/2 Marathon/RUCK is out and back with an approx. elevation gain of 2200ft. PLEASE NOTE THIS IS A TRAIL 1/2 MARATHON AND NOT YOUR ROAD 13.1 SO YOU WILL BE RUNNING 13.1-ISH MILES. No Wimps, No Whining! ***Rockin' Rockwoods 53K & 1/2 Marathon/RUCK are the toughest trail events you will run in St. Louis, MO. We guarantee it!

START TIME & TIME LIMIT

ALL events will start at 7:00 AM on September 26, 2026. The final cut-off for ALL 3 distances is 10 hours. ​Other cut-off times to note that will be strictly enforced are as follows: The first cutoff will be enforced at aid station #3 (Scenic Loop - 15.5 Mi) all runners must be checked OUT of the aid station prior to 11 AM on their way out to aid station #4 - Rockwoods Reservation. The second cutoff will be enforced at aid station #4 (Rockwoods Reservation - 20.75 Mi) all runners must be checked OUT of the aid station prior to 12:50 PM on their way back to aid station #5 Scenic Loop. The third cutoff will be enforced at aid station #5 (Scenic Loop 26 Mi) all runners must be checked OUT of the aid station prior to 2:50 PM on their way back to the start/finish. ​*Please note if a runner is unable to make the above listed cut-off times at the aid stations they will not be allowed to continue on the course*

AID STATIONS

4 manned aid stations fully-stocked with water, electrolyte drinks, gels, snacks, first aid, and enthusiastic volunteers! Approximate distance between aid stations is 5.5 miles with no distance greater than approximately 7.5 miles between aid stations in either event. Restrooms will be at start/finish and the turn around at aid station# 4.

REFUND AND GENERAL RACE POLICIES

Race refund policy and other general policies can be reviewed HERE *Please Review ALL Race Policies Before Signing Up for the Race*

This Is a Cup-Free Event

PLEASE NOTE: ROCKIN' ROCKWOODS IS A CUP-FREE EVENT, which means there won't be any paper cups at aid stations, and there won't be any paper or plastic cups at our finish-lines. We won't be making any exceptions to this rule, so if you don't bring your own drinking receptacle come race-weekend, you'll want to pre-purchase a collapsible cup and if you don't already have a reusable soft flask to carry with you on the course (for soda & electrolyte drink, etc.), we will have the collapsible cups for purchase when you check in for the race and/or at packet pickup for $5 (quantities limited at check-in). Please help us keep our races eco-friendly, minimize the trash in the landfills and our trails clean. Together we can make a difference!!!

SWAG and AWARDS

Included in Your Race Registration • Custom Cotton/Poly Blend Hoodie - Unisex Sizes DEADLINE FOR GUARANTEED SWAG WITH YOUR REGISTRATION: August 23, 2026 Registrations received after this date will receive an alternative swag item. • Post‑race food and beer to salute your finish • Finisher Awards: – All 53K and 1/2 Marathon finishers receive a custom handmade medal – All RUCK division finishers receive a Rockin’ Rockwoods rucking patch Awards Awards will be given to the overall male, female, and non‑binary finishers in both the 53K and 1/2 Marathon distances ONLY. Important Notes • All medals, swag, and awards must be picked up at the finish line. We are unable to mail items. • First‑time Rockin’ Rockwoods 53K finishers earn a special KICKA$$ Ultra Virgin sticker to celebrate your first ultra. • 10‑Year Finishers: If 2026 is your 10th year running the Rockin’ Rockwoods 53K and/or 1/2 Marathon, you’ll receive a locally crafted, custom handmade ceramic mug to commemorate your milestone.

POST RACE

Volunteer-host - individually served, buffet-style food with non-vegetarian and vegetarian options, and one drink per runner will be available post-race for all runners as they finish their respective distances. Join us for some grub and cheer on your fellow Rockin Rockwoods racers. *Post race food is for RUNNERS and VOLUNTEERS Only*

SUSTAINABILITY

READ ABOUT OUR SUSATINABILTY PLEDGE HERE PLEASE NOTE: All our races are CUP-FREE and please bring your own MESS KIT with a plate and spork for post-race food. *We will not have any paper or plastic cups, plates and/or utensils at our events to help us reduce the waste from our races as part of our Zero Waste pledge.