Corps of Discovery Trail Races

Race Overview

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.

Discount: 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.

Course Description

• Half Marathon: The half-marathon course covers approximately 13.1 miles starting from the Lewis & Clark trailhead.
• Trail Route: Participants will first run the 8-mile Lewis Trail followed by the 5-mile Clark Trail.
• Counter-Clockwise: The course will travel counter-clockwise and will not be closed to outside use.
• Course Maps: Half Marathon Course Map, 8 mile Course Map, 5 mile race Course Map.

All distances start at 8:00 a.m.

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. Please carry a water receptacle and fill up as needed with water and/or Tailwind, 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).
• 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, approximately an 18-minute pace per mile.

Additional Information

• DROP BAGS: We will have a drop bag collection area at the start/finish area. Please mark the bag with your name.
• RACE START: All distances will start and finish at the Lewis and Clark trailhead with staggered starts.
• AID STATIONS: Detailed aid station provisions for 5 Mile, 8 Mile, and Half Marathon participants.