4th Annual Thunder Chicken 100K Stage Races

Thunder Chicken 100 Stage Races St. Louis’s only three-day trail running stage race!

Hosted at Greensfelder County Park (Beulah Shelter) in western St. Louis County, Missouri, this event was created for adventure seekers who want a full weekend of challenge, community, and unforgettable trail running. Participants come together for tough races, great fellowship, and the chance to experience some of the very best trails STL has to offer!

May 15, 2026 - Stage 1 - 21-ish Mi - Tour de Rockwoods Range
May 16, 2026 - Stage 2 - 26-ish Mi - Tour de Rockwoods Reservation
May 17, 2026 - Stage - 25K-ish - Tour de Greensfelder​

Race Website: https://www.terraintrailrunners.com/thunder-chicken-100k.html

Register Here: https://ultrasignup.com/register.aspx?did=134778

Also check out other Sports events in Allenton, Trips & Adventurous Activities in Allenton, Contests in Allenton.