Foristell, Missouri · Saturday, August 1, 2026
The The Next Loop Endurance Series 20K, 30K, 40K, 50K is a 20k, 30k, 40k, 50k, and ultra event held on Saturday, August 1, 2026. It is located at 2679 Dietrich Rd in Foristell, Missouri.
The BEER & BAGEL OFF-ROAD RACE SERIES is coming back to St. Louis! This is a favorite event for runners throughout the area, who come each year for a challenging trail run with a fantastic post-race party. Of course, there will be plenty of free bagels and beer. And the legendary race shirt, too – a long-sleeve tech shirt with “I’m a Drinker with a Running Problem” printed across the back. The event is supported by Fit4adventure Touring Company!
We will be utilizing the Smith Shelter with entrance of Weidman Road.
Join us for the 6th annual USAT sanctioned 370 Lakeside Triathlon! Enjoy the flattest, fastest course starting in beautiful 370 Lakeside Park! Enjoy a beach start, amazing country roads in St. Charles County, and a run that includes the park trails. We offer a variety of race options from a 5k run, super sprint or sprint for newbies, up to half distance along with duathlon, aquabike and aquathlon options!
For more information including course maps, schedule of events, race options, volunteer signup, etc. Please visit - https://www.mseracing.com/370-lakeside-triathlon
All athletes MUST show a Photo ID and pick up their own race packet, NO EXCEPTIONS.
***St. Louis Track Club members will automatically receive a $10 discount (use the same email address that you use for your member registration). Not a member? Click here to join. ***
St. Louis Track Club is excited to invite everyone to join the Corps of Discovery Trail Races, held on the Lewis & Clark Trails in the beautiful Weldon Spring Conservation Area on August 29, 2026.
Course Description:
The half-marathon course covers approximately 13.1 miles and begin from the Lewis & Clark trailhead in the Weldon Spring Conservation Area off Hwy 94 in Defiance, MO. Half marathon participants will first run the 8-mile Lewis Trail and then the 5-mile Clark Trail. The course will travel counter-clockwise and will not be closed to outside use. There will be markings along the course and a volunteer where the trails split.
The 5-mile distance will cover one loop of the Clark trail and the 8-mile option will cover one loop of the Lewis trail. The trail winds itself along the bluffs of the Missouri River down the hardwood-lined ridges and into the hollows so all participants will have something to enjoy.
All distances start at 8:00 a.m.
Half Marathon Course Map
8 mile Course Map
5 mile race Course Map
Sign up before August 15th to guarantee swag! All runners registered before this date will receive swag and a finisher's medal.
Thank you to our sponsor Tailwind Nutrition!
Race Day Details:
CUP FREE: This race is a CUP FREE event. This means that there will be NO paper cups at any of the aid stations. Please carry a water receptacle and fill up as needed with water and/or Tailwind, both of which will be available throughout the course.
PARKING: Parking is in the secondary lot at the Weldon Spring Interpretive Site (7295 RT-94, St. Charles, MO). Please follow the signs and park where guided so as to leave room on the main lot for other trail patrons.
PACKET PICK-UP: All racers can pick up their packets near the parking lot and race start line on race morning starting at 6:30 am.
CUT-OFF TIMES: The cutoff time is 12 p.m., or 4 hours. This is approximately an 18-minute pace per mile. The half marathon course brings runners to the Lewis and Clark trailhead at 8ish miles before heading out to do the final 5-mile loop on Clark. Runners must start their 5-mile loop by 10:30am.
DROP BAGS: We will have a drop bag collection area at the start/finish area. Please mark the bag with your name in case someone has the same one.
RACE START: All distances will start and finish at the Lewis and Clark trailhead. The 5 mile runners will start in quick waves starting at 8 AM and the Half Marathon and 8 milers will start in quick waves at 8:05AM. Since parking is across the roadway at the Weldon Spring site, we will have cones set up to warn drivers and give runners a safe way to be along the roadway. Be sure to pay close attention to the roadway and take caution as you cross.
AID STATIONS: 5 Mile: One manned aid station at mile 3 (water, electrolyte drink, and snacks), plus water and support at the finish line. 8 Mile: An unmanned water-only station around mile 4, and a manned aid station at mile 6.5 (water, electrolyte drink, and snacks). Half Marathon: Runners complete the Lewis loop first, with access to those same stations. They then pass through the start/finish area around mile 8.2 (fully stocked), followed by a final manned station near mile 12 (water, electrolyte drink, and snacks) before returning to the finish.
***St. Louis Track Club members will automatically receive a $10 discount (use the same email address that you use for your member registration). Not a member? Click here to join. ***
Come get loopy with us! The DeClue Loops Trail Race will be held Oct. 10, 2026 in scenic Greensfelder Park in Wildwood, MO.
The DeClue Trail is a 8.2-mile loop that begins and ends near the Visitor's Center in the heart of Greensfelder Park. Runners will run counter-clockwise starting and finishing near the trailhead. There are four distance options:
1 loop - 8 miles
2 loops - 16 miles
3 loops+ - Full Marathon
4 loops - 50k
Register early, price goes up on 8/12/2026.
Each distance option will have awards for the top female and top male. Race Swag is included with registrations made through 9/25/26.
RACE DAY INFO
CUP FREE: This is a cup-free event. It is strongly recommended that you carry hydration with you on course. There will not be any cups at the stations on the course.
PARKING: There should be plenty of parking within Greensfelder Park including near the Visitor’s Center, at Muckerman Shelter and at the gravel parking lot near the gravel road that heads to Round House.
Race registration and headquarters will be set up at the yellow gate at DeClue Trailhead. You will likely walk on the road to get from parking to registration, so please drive slowly when moving through the park, and pay attention to traffic as you walk near race headquarters.
PACKET PICK-UP: 50k and Marathon runners can begin picking up their packets at 6:15 a.m. at the trailhead, which is at the gravel parking lot near the gravel road that heads to Round House. 8-mile and 16-mile runners can begin picking up their packets at 7:15 a.m. at the trailhead.
Extra shirts/swag may be available if you registered after the deadline, just ask!
RACE START: The 50k distance and the Marathon will both begin at 7 a.m. The 8-mile and 16-mile races will begin at 8am. Race cut-off is 5pm. All runners must begin their last loop by 2:30pm.
50K (18:45 pace) - 10 hours
Marathon (22:54 pace) - 10 hours
16 Mile (33:45 pace) - 9 hours
8 Mile (1:07:30 pace) - 9 hours
COURSE: 50k, 8-mile and 16-mile runners will start at the yellow gate and head down toward Round House making a left onto DeClue Trail. Marathon runners will also start at the yellow gate but will make a quick right to do a 2.4-mile loop on Dogwood Trail before heading onto DeClue. Once on DeClue runners will enjoy rolling hills and technical trails with a manned and stocked aid station at the 3-mile mark (with snacks and Tailwind) and a water station at about 6.2 mile mark just across Scenic Road. At the bottom of a nice hill runners will turn left on Eagle Valley trail, which will bring you up a nice climb to the top, behind the Visitor’s Center and across the street to the yellow gate start/finish area. Whether you are doing the loop once or 4 times, we hope you all take time to pause and enjoy all that Greensfelder Park offers.
The course will be well marked with orange flags and signs/arrows to guide runners. You can also check out the orange DeClue Loop on the Trail Map found here: https://stlouiscountymo.gov/st-louis-county-departments/parks/places/greensfelder-park/
TAILWIND will be served at the start/finish area and at the 3-mile aid station, and water and grab and go snacks will be available on course. Pre-packaged food will be served at aid stations and start/finish.
DROP BAGS: We will have an area for drop bags near the start/finish for runners to access in between loops.
POST RACE: Stick around after the race for beer/NA beer and snacks and to cheer on the rest of the runners!
THANK YOU TO OUR SPONSORS Tailwind and 4 Hands Brewing Company