Upcoming events.
Bad Dawg Ultra - Waynesville MO
This no-frills 100/50/100k/50k race and 12 mile run/ruck is the perfect event for those people who love running for a purpose. And the purpose is this... to provide a new pair of shoes to every Elementary student in the Crocker school district as part of the HFPC’s (Healthy Futures Pulaski County) OneSolePurpose project (check out onesolepurpose.com) This out-and-back course (10 mile loop) will give you a few rolling hills and lots of flat gravel with tree-lined country views. This is a great race for those first-time ultra runners and also for those wanting a shorter distance.
Shawnee Hills Trail Race - Ultra
Shawnee Hills Trail Races is an entire weekend of outdoor and trail running FUN for not just the runners but their family and friends! The event is held at Camp Ondessonk, Ozark, Illinois, on August 22-23, 2026. There will be miles and miles of great running through the beautiful Shawnee National Forest, and the totally rustic Camp O cabins. There is a 100 mile, 100k, 50k and Half Marathon option...plenty of fun for everyone!
Labor Day Slay
Welcome to The Labor Day Slay! 5k-10k, 10k Ruck & Half Marathon! Brought to you by Rockinator Racing.
Starting Saturday September 5th at 7:30 am in beautiful Queeny Park.
Run Walk Jog or Ruck starting from Racers Village at the Smith Pavillion, through the shady rolling trails of Queeny park.
Heart of America Marathon
Welcome to the Heart of America Marathon!
26.2 miles starting at the Boone County History and Culture Center at Nifong Park, running 11 miles down to the Katy Trail, (formerly the MKT Trail Line, now part of the U.S Rails-to Trails system) for 1.5 miles along the scenic Missouri River, past Cooper’s Landing and the historic community of Easley, from where Easley Hill (Route N) affectionately takes its name.
Swifty Fun Run
Welcome to the Swifty Fun Run! It is a themed running event where fans and fitness enthusiasts come together to run and celebrate the amazing person and music of Taylor Swift. This event offers a range of distances to suit every participant's level of fitness and ambition: a 1-mile jog/walk, 5K, 10K or Half Marathon.
Rockin Rockwoods Trail Race
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!
DeClue Loop Race
DeClue Race is Back!!
Join us on Oct. 10, 2026 for the 6th annual DeClue Loop Trail Race, a premier in Missouri's trail racing scene, held at Greensfelder County Park in Wildwood, MO. This thrilling race features various distance options, ranging an 8-mile single loop to a demanding 50k, all along the scenic DeClue Trail. Whether you're an experienced trail runner or just starting, this race highlights the stunning beauty and challenges of Missouri's natural terrain. With awards for top finishers and exclusive perks for St. Louis Track Club members, this is an event you won't want to miss.
Register Here!!! DeClue Loops Trail Race
Mini HaHa Endurance Race
The Minnie Ha Ha 6 & 12 hour timed race is a paved-loop course that is USATF-certified, and measures 1.17 miles which will be chip timed that winds through the mostly flat wooded park with great views of the Meramec River and fall foliage. The start/finish area is located at the Shelter "E." There is adequate parking throughout the park with a playground and restrooms in close proximity to the shelter. The aid station is adjacent to the start /finish and will be stocked with plenty of fluids and foods you would expect at an ultra-event. There will be cool swag for all participants!
Babler Bongo Ruck and Run
The Babler Bongo 15K Trail Race/15K RUCK is a great introduction to trail racing for beginners as well as a challenge to test their speed for the more experienced trail runners. The race start/finish will be at the Guy Park Trailhead - Henry Babler Shelter in Dr. Edmond A. Babler Memorial State Park.
The Babler Bongo 15K Trail Race/15K RUCK is a loop course connecting Dogwood, Woodbine, Hawthorn and Equestrian trails at Babler State Park. The loop has a cumulative elevation gain of 1,350 feet.
The course offers a challenging terrain ranging from steep grade to rolling hills, rocks, roots and creek crossings that will make for a fairly challenging loop course.
OZARK TRAIL 100 MILE ENDURANCE RUN
The Ozark Trail 100 Mile Endurance Run is a point-to-point 101 mile run on the Ozark Trail through the Mark Twain National Forest in south central Missouri.
Your century-plus journey unfolds along nearly continuous single-track trail, where smooth dirt paths intermingle with technical challenges hidden beneath October's vibrant carpet of leaves. With approximately 12,000 feet of elevation gain, crystal-clear stream crossings, and remote wilderness passages, this point-to-point adventure demands respect—and rewards perseverance with some of the most spectacular fall running in the heartland.
Get all the details and register here!! Ozark Trail 100 Mile Endurance Run - October 31, 2026 | Register Now
The Skippo
The Skippo began in 2009 as a 20k trail race in beautiful Castlewood State Park that featured two 10k loops on a fairly flat course except, of course, for the famous stairs! In 2011, we wanted to involve as many runners as possible so we added two more options, a 10k and a 30k. The Skippo then evolved into a two-day format in order to accommodate growth and popularity. In 2019 the 20k was changed to a Half-Marathon, and thus the modern day SKIPPO was born.
Tunnell Hill 100 Ultra
We are pleased that Tunnel Hill will host the 2026 USATF 50 Mile Road Championships!
If you've never experienced being part of a National Championship, you should! We are offering reduced pricing for you to offset some of the membership costs.
If you plan to run in the championship division, and be eligible for awards, you'll need to be a member in good standing of the USATF, and an American citizen. NOTE: this rule applies ONLY to the USATF 50mi championship race. You can find information and join here: USATF Adult Membership
Wildwood Trail Marathon
Presented by Terrain Trail Runners, Wildwood Trail Marathons are a great wrap up to any runners racing season whether you run road or trail, novice or experienced the course will not disappoint.
Wild in the Woods
The 6th annual Wild in the Woods Trail Race will take place at the beautiful Broemmelsiek Park in St. Charles County on December 5th, 2026. Signup for 5 or 10 miles of the flattest, fastest, and most beautiful single track in Missouri. Join us after your race for live music, a free beer (21+), and great vibes!
Drink MO Beer Run - 5k | 10k | 1 mile
Lace up and drink up at the Drink MO Beer Run!
Get ready for a high-energy evening of fun, flavor, and fitness! This flat and fast run loops around a stunning lakeside course and finishes in party mode
Swifty Fun Run
Welcome to our 3rd annual Swifty Fun Run! It is a themed running event where fans and fitness enthusiasts come together to run and celebrate the amazing person and music of Taylor Swift. This event offers a range of distances to suit every participant's level of fitness and ambition: a 1-mile jog/walk, a 5K, a 10K, and a half marathon.
Triple Crown 10K - Bluff View
Triple Crown 10K Night Trail Run Series is no "ordinary" trail running series. The Triple Crown is designed for the vert chasers and the night owls! If you love to climb and enjoy running trails at night, we are excited to share this three-week hill progression trail running series with you.
Ditch the Friday night bar crawl and adventure with Terrain Trail Runners for the TC10K night trail run series for
three straight weeks in August!
40/50 Mile Challenge - Indian Camp Creek
The 40/50 Mile Challenge is a continuous loop endurance race designed for runners who want to push beyond traditional race formats while benefiting from a fully supported, centralized course.
Held alongside The Next Loop Endurance Series, this event runs on the same 3.1-mile (5K) loop, but unlike the hourly format, competitors in the 40/50 Mile Challenge run continuously with a strict time cutoff.
The Next Loop - Foristell MO
What Is The Next Loop?
The Next Loop Endurance Series is a loop-based endurance running event designed for every type of runner — from first-time 10K participants to seasoned marathoners, ultra runners, CrossFit, Hyrox, and tactical athletes.
The Next Loop 50K • 50M • 100K • 100M
Four distances. One course. One question—how far will you go?
Welcome to Pinnacle Mountain State Park for a continuous, loop-based ultra built around one simple idea: every mile matters. Choose from the 50K, 50 Mile, 50 Mile Night Challenge, 100K, or 100 Mile and experience a race where consistent support, smart pacing, and personal determination matter more than complicated logistics.
Get Your Butt Kicked at Route 66
Route 66 State Park, located just east of Eureka, MO, features flat, fast trails through shaded woodlands and lies along the scenic Meramec River. With 3- and 6-hour race options available, it’s ideal for both newcomers to timed races and seasoned ultrarunners alike.
MIner Tough Trail and XC Race
Welcome to Miner Tough Weekend, beautiful trail racing hosted at Missouri's St Joe State Park, just south of St Louis Missouri.
Saturday July 11th is dedicated to Trail running. Pick from multiple distances. All will be supported with ample water stations and refreshments will be available post race at the finish line.
Dark 2 Dawn Night Trail Races
Dark 2 Dawn Night Trail Race
⚡ Sat–Sun, June 27–28, 2026
🏟️ TBD
🔥 Night Trail · Solo/Team
🏆 Register here