Weldon Spring Trail Marathon and Half

Event Details
Join the St. Louis Track Club in beautiful Weldon Spring, MO for the Weldon Spring Trail Marathon and Half. Both courses offer participants a breathtaking journey through scenic landscapes, combining natural beauty with a challenging course. As runners navigate the trail, they are treated to a variety of stunning views that enhance the overall experience.

Wooded bliss, scenic overlooks, water features, wildlife encounters and diverse terrain make this race a must-do for your 2025 race season. The Weldon Spring Trail Marathon and Half provides not only a physical challenge but also a feast for the senses as participants immerse themselves in the beauty of the natural surroundings.

When: March 22, 2025 at 8am
Where: Weldon Spring Site, 7295 MO-94, St Charles, MO 63304
Registration: Marathon is $100, Half is $80 through 2/28/25, price increase after 3/1/25

SLTC Members save $10
Swag: Race shirt included with registration. Be sure to register by the March 6th deadline to guarantee your size.

Refund/Cancellation Policy: No refunds, entries are not transferable to other events but may be transferred to another person before MARCH 20, 2025

The safety of our participants is our highest priority. Races will be held rain, snow, or shine and will not be cancelled except for cases of severe weather or unsafe road/trail conditions. Less threatening conditions may cause alterations of the course or post event activities to ensure participant, volunteer, and community safety. We are a nonprofit organization and all net proceeds are used to further the St. Louis Track Club’s mission in the community. As such, no refunds or credits will be given in the case of cancellation due to weather.

Runners are responsible for checking course maps and understanding the race course https://www.stlouistrackclub.com/weldon-spring-marathon-and-half. You are responsible for your own mistakes!

RACE DAY INFORMATION
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 6:30am. 

CUT-OFF TIMES
The cutoff time is 4pm, or 8 hours. This is approximately an 18-minute pace per mile for the marathoners. The marathon course brings runners to the Lewis and Clark trailhead at 21 miles before heading out to do the final 5 miles loop on Clark.

DROP BAGS:
For runners who want to have a bag at the Lewis and Clark trailhead, we will have a drop bag collection area at the Registration area. Please mark the bag with your name in case someone has the same one. Volunteers will bring them to the trailhead for either your finish or before marathoners head out for the final Clark loop.

RACE START: 
Both distances start at the trailhead near the back of the parking lot at the Interpretive Site. Both distances will finish across the street at the Lewis and Clark trailhead. We will have cones set up to warn drivers and give runners a safe way to be along the roadway. Be sure to ay close attention to the roadway and take caution as you cross.