Doomsday 5K St. Louis, MO   Jan 1, 2027

The Doomsday 5K is the first ever 5K trail race presented by Terrain Trail Runners – STL! Whether you are just getting your feet wet with trail running or you are an experienced trail runner this is the race for you. The Doomsday 5K trail race is the first foot race to be hosted at Cliff Cave County Park, Missouri on January 1, to help you start the New Year R.I.G.H.T!

The Doomsday 5K trail race will start/finish a little way past the train tracks in Cliff Cave County Park. Runners will start on the pavement for 1/2-ish Mile then get on the Spring Valley Trail Outer Loop for 1.8-ish Miles before heading back to the finish on pavement once again for 1/2-ish Mile to the finish. Spring Valley Trail is an all-dirt trail with rolling hills, some roots and rocks to keep you present!

*Spring Valley Trail is a beginner friendly trail*

Kick off the New Year with a 5K race on some fast and relatively ‘easier’ trails!