Thunder Chicken 100K Stage Races

Eureka, United States • 30-2 Apr-May 2027

Thunder Chicken 100K Stage Races

Thunder Chicken 100K Stage Races is a three day trail running stage event held April 30 to May 2, 2027, in Wildwood, Missouri. The event is organized by Terrain Trail Runners and is hosted at Greensfelder County Park, Beulah Shelter. It links the Greensfelder, Rockwoods Range, and Rockwoods Reservation trail systems.

Over three consecutive stages runners cover roughly three distinct routes. The courses include creek crossings, scenic vistas and bluffs, dense forest, and technical singletrack with rocks and roots. Cumulative elevation gain is listed per stage and includes sustained climbing and a final 340 foot climb on the last day.

  • Stage 1 - 21-ish Mi - Tour de Rockwoods Range
  • Stage 2 - 26-ish Mi - Tour de Rockwoods Reservation
  • Stage 3 - 25K-ish - Tour de Greensfelder

Race services include at least one aid station per stage, custom race swag (cotton/poly shirt with a guaranteed order deadline of April 3, 2027), and post‑race food and beverage options. All three day finishers receive a custom belt buckle; individual stage finishers receive medals. Awards for overall male, female, and non-binary finishers apply to All 3 Day finishers only. The event is cup free and follows a zero waste sustainability pledge; participants are expected to use reusable drinking and dining gear. Greensfelder County Park provides tent camping, RV hook‑ups, and showers; additional lodging is available in nearby towns. Visit the organization's website for the most recent information.

Race information

100 km
Three Day Stage Race (all 3 Days)
26 mi
Stage 2 - Tour de Rockwoods Reservation
21 mi
Stage 1 - Tour de Rockwoods Range
25 km
Stage 3 - Tour de Greensfelder
Visit the organization's website for the most recent information.
Trail runs nearby

Timed 3- and 6-hour loop races at Route 66 State Park near Eureka, MO on a measured 2.425-mile course with a 0.333-mile short loop. Cupless aid at the Forest Shelter; runners must bring hydration and lights.

A loop-based trail event in Foristell, Missouri on August 1, 2026, where runners repeat a 3.1 mile (5K) loop each hour and may stop after any completed loop. Results combine times for all completed loops to determine rankings.

A three-week night trail series in Wildwood, MO featuring three 10K races with increasing climb per mile. Organized by Terrain Trail Runners, the series includes finisher stickers, post-race refreshments, awards credits, and a cup-free sust..

A loop based trail event at Cliff Cave Park on August 22, 2026, featuring a marked 3.1 mile loop along the River Bluff Trail with packed dirt, singletrack, and bluff views. Runners may repeat laps to reach distances from 5K to 50K.

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