August 30 2025

2025 Corps of Discovery Trail Races, held in the beautiful Weldon Spring Conservation Area on August 30th, 2025

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** New in 2025 the 8 Mile Option!**

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Lace up your shoes and step into history at the St. Louis Track Club's annual Corps of Discovery Trail Races! Since its inception in 2013, this event has invited runners to challenge themselves on the Lewis & Clark trails set within the breathtaking Weldon Spring Conservation Area. 

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Choose your journey:

• The 5-mile Clark Trail

• The 8-mile Lewis Trail 

• The Half Marathon (both trails)

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Nestled within nearly 8,400 acres of rugged upland forests and steep wooded bluffs, the Weldon Spring Conservation Area provides a natural experience like no other. Prepare to navigate trails that wind through lush woodlands, offer challenging climbs, and unveil amazing views of the stunning Missouri River. Every stride is a discovery, connecting you not just with nature, but with the spirit of exploration.

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Whether you're new to the trails or a veteran runner craving a demanding course with historic significance, the Corps of Discovery Trail Races delivers an unforgettable experience. Come conquer the bluffs, embrace the wild, and earn your place in the St. Louis running legacy!

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Course Description:

The course will cover approximately 13.1 miles and begin from the Lewis & Clark trailhead in the Weldon Spring Conservation Area off Hwy 94. Half marathon participants will first run the 8-mile Lewis trail and then the 5-mile Clark trail. The course will travel counterclockwise and will not be closed to outside use. There will be markings along the course and a volunteer where the trails split. The 8-mile option will cover 1 loop of the Lewis trail and the 5-mile option will cover 1 loop of the Clark 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.

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$75 - Half Marathon ($80 after 7/1/2025)

$65 - 8 Mile Race ($70 after 7/1/2025)

$55 - 5 Mile Race ($60 after 7/1/2025)

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Sign up before August 14th to guarantee a T-shirt!

All runners registered before this date will receive a t-shirt and a finisher's medal. 

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