Corps of Discovery Trail Races
From St. Louis Track Club
- Date Sat 29th August 2026
- Time 8:00AM CDT
- Location Saint Charles, Missouri
- Price $60.31 - $81.66
- Races 3 races
- Distances Half Marathon, 5 Mile
Event summary
Get ready for an unforgettable adventure at the 2026 Corps of Discovery Trail Races on Saturday, August 29, 2026! Organized by the St. Louis Track Club, this exciting event takes place in the stunning bluffs of the Missouri River, specifically at the Lewis & Clark Trailhead in Weldon Spring, St. Charles. Whether you're a seasoned trail runner or just starting out, there's a race distance for everyone. Choose from a scenic 5-mile loop ideal for beginners, an 8-mile rugged trail with breathtaking river views, or the ultimate challenge of the half marathon that combines both the 8-mile and 5-mile courses for an exhilarating experience.
Races kick off at 8:00 AM, and participants can look forward to a plethora of perks, including race medals for finishers and awards for top performers in each category. Plus, enjoy exclusive benefits if you're a member of the St. Louis Track Club! With a commitment to sustainability, this event is also cup-free, encouraging runners to carry their own hydration solutions. Don't miss your chance to be part of this epic race day—register by August 15th to guarantee your race shirt and join fellow adventurers in making memories on these historic trails!
Races kick off at 8:00 AM, and participants can look forward to a plethora of perks, including race medals for finishers and awards for top performers in each category. Plus, enjoy exclusive benefits if you're a member of the St. Louis Track Club! With a commitment to sustainability, this event is also cup-free, encouraging runners to carry their own hydration solutions. Don't miss your chance to be part of this epic race day—register by August 15th to guarantee your race shirt and join fellow adventurers in making memories on these historic trails!
Organiser's Description
Ready to follow in the footsteps of legends? The St. Louis Track Club invites you to the bluffs of the Missouri River for the 2026 Corps of Discovery Trail Races. Whether you're looking for a fast-and-flowy 5-miler or a hilly half marathon, these historic trails have a challenge waiting for you.
warning SLTC Member Perk: Current members receive an automatic $10 discount at checkout! (Make sure to use the email associated with your membership). Not a member yet? Click here to join and save!
CHOOSE YOUR ADVENTURE
ALL DISTANCES KICK OFF AT 8:00 AM from the Lewis & Clark Trailhead in Weldon Spring.
* The Clark (5 Miles): A single, scenic loop of the Clark Trail. Perfect for those new to trails or looking to burn through the hardwood-lined ridges.
* The Lewis (8 Miles): A rugged loop of the Lewis Trail featuring stunning river views and hollow-to-ridge climbs.
* The Expedition (Half Marathon): The ultimate test. Youll conquer the 8-mile Lewis loop first, then head back out to tackle the 5-mile Clark loop.
VIEW THE COURSES: 5-MILE MAP [https://www.plotaroute.com/route/2977929?units=miles] | 8-MILE MAP [https://www.plotaroute.com/route/2977937?units=miles] | HALF MARATHON MAP [https://www.plotaroute.com/route/2977941?units=miles]
SWAG & AWARDS
* The deadline: Register by August 15th to guarantee your race shirt.
* All race finishers will receive a medal.
* Overall awards (1st, 2nd, and 3rd place) will be given to female, male and non-binary winners for each distance.
RACE DAY LOGISTICS:
stopwatch Schedule & Cut-offs
* 6:30 AM: Packet Pick-up opens near the start line.
* 8-8:10 AM: Race waves begin (Half Marathon, 8 Mile, 5 Mile).
* 12:00 PM: Course officially closes (4-hour limit).
PACE REQUIREMENTS:
* 5-Mile distance: 48-minute/mile
* 8-Mile distance: 30-minute/mile
* Half Marathon distance: 18:19-minute/mile. Half marathon participants must start the 5-mile Clark Trail loop by 10:30 a.m.
RECYCLING SYMBOL CUP-FREE POLICY
In our mission to keep the Weldon Spring Conservation Area pristine, this is a CUP-FREE event. No paper cups will be provided. Please carry your own bottle or hydration pack. We will provide plenty of water and Tailwind Nutrition at our aid stations to keep you moving!
Were proud to partner with Hydrapaks Sustainable Racing Program to help reduce race day waste in 2026!
Each runner will receive a reusable HydraPak SpeedCup at packet pickup to use throughout the race. Our amazing volunteers and staff have worked hard to create a seamless aid station experience for you.
At every aid station, theyll be ready to fill your cup, or you can use the self-serve coolers stocked with water and electrolytes for quick and easy access. Lets race responsibly together!
PARKING & SAFETY
* LOCATION: Park at the WELDON SPRING INTERPRETIVE SITE (7295 RT-94, St. Charles, MO). Follow signs to the secondary lot.
* ROAD CROSSING: You will need to cross Hwy 94 to get to the start line from the Interpretive Center. Please use the coned safety lane and follow volunteer directions. Watch for vehicle traffic on Hwy 94.
* DROP BAGS: A designated area for bags will be available at the Start/Finish line. Please label your gear!
AID STATION SUPPORT
* 5-MILE (CLARK TRAIL): Manned station at Mile 3 (Water, Tailwind, snacks).
* 8-MILE (LEWIS TRAIL): Water-only station at Mile 4; Manned station at Mile 6.5.
* HALF MARATHON: Access to all Lewis stations, a full reload at the Start/Finish (Mile 8.2), and a final manned station at Mile 12.
Thank you to our sponsors Tailwind Nutrition and Hydrapak!
warning SLTC Member Perk: Current members receive an automatic $10 discount at checkout! (Make sure to use the email associated with your membership). Not a member yet? Click here to join and save!
CHOOSE YOUR ADVENTURE
ALL DISTANCES KICK OFF AT 8:00 AM from the Lewis & Clark Trailhead in Weldon Spring.
* The Clark (5 Miles): A single, scenic loop of the Clark Trail. Perfect for those new to trails or looking to burn through the hardwood-lined ridges.
* The Lewis (8 Miles): A rugged loop of the Lewis Trail featuring stunning river views and hollow-to-ridge climbs.
* The Expedition (Half Marathon): The ultimate test. Youll conquer the 8-mile Lewis loop first, then head back out to tackle the 5-mile Clark loop.
VIEW THE COURSES: 5-MILE MAP [https://www.plotaroute.com/route/2977929?units=miles] | 8-MILE MAP [https://www.plotaroute.com/route/2977937?units=miles] | HALF MARATHON MAP [https://www.plotaroute.com/route/2977941?units=miles]
SWAG & AWARDS
* The deadline: Register by August 15th to guarantee your race shirt.
* All race finishers will receive a medal.
* Overall awards (1st, 2nd, and 3rd place) will be given to female, male and non-binary winners for each distance.
RACE DAY LOGISTICS:
stopwatch Schedule & Cut-offs
* 6:30 AM: Packet Pick-up opens near the start line.
* 8-8:10 AM: Race waves begin (Half Marathon, 8 Mile, 5 Mile).
* 12:00 PM: Course officially closes (4-hour limit).
PACE REQUIREMENTS:
* 5-Mile distance: 48-minute/mile
* 8-Mile distance: 30-minute/mile
* Half Marathon distance: 18:19-minute/mile. Half marathon participants must start the 5-mile Clark Trail loop by 10:30 a.m.
RECYCLING SYMBOL CUP-FREE POLICY
In our mission to keep the Weldon Spring Conservation Area pristine, this is a CUP-FREE event. No paper cups will be provided. Please carry your own bottle or hydration pack. We will provide plenty of water and Tailwind Nutrition at our aid stations to keep you moving!
Were proud to partner with Hydrapaks Sustainable Racing Program to help reduce race day waste in 2026!
Each runner will receive a reusable HydraPak SpeedCup at packet pickup to use throughout the race. Our amazing volunteers and staff have worked hard to create a seamless aid station experience for you.
At every aid station, theyll be ready to fill your cup, or you can use the self-serve coolers stocked with water and electrolytes for quick and easy access. Lets race responsibly together!
PARKING & SAFETY
* LOCATION: Park at the WELDON SPRING INTERPRETIVE SITE (7295 RT-94, St. Charles, MO). Follow signs to the secondary lot.
* ROAD CROSSING: You will need to cross Hwy 94 to get to the start line from the Interpretive Center. Please use the coned safety lane and follow volunteer directions. Watch for vehicle traffic on Hwy 94.
* DROP BAGS: A designated area for bags will be available at the Start/Finish line. Please label your gear!
AID STATION SUPPORT
* 5-MILE (CLARK TRAIL): Manned station at Mile 3 (Water, Tailwind, snacks).
* 8-MILE (LEWIS TRAIL): Water-only station at Mile 4; Manned station at Mile 6.5.
* HALF MARATHON: Access to all Lewis stations, a full reload at the Start/Finish (Mile 8.2), and a final manned station at Mile 12.
Thank you to our sponsors Tailwind Nutrition and Hydrapak!
Races
-
Half Marathon
Incl. $6.66 Fee & T-Shirt
Sat 29th August 2026 (8:00AM CDT)
$81.66
This distance will run both the Lewis loop (8 miles) plus the Clark loop (5 miles) -
8 Mile
Incl. $5.99 Fee & T-Shirt
Sat 29th August 2026 (8:00AM CDT)
$70.99
This distance is only the Lewis Loop (8 miles) -
5 Mile
Incl. $5.31 Fee & T-Shirt
Sat 29th August 2026 (8:00AM CDT)
$60.31
This distance is only the Clark Loop (5 miles)
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Lewis and Clark Trailhead, Saint Charles, 63304, MO, United States
Corps of Discovery Trail Races
