The race is run on the popular Chubb trail. The 25k will do one out & back & the 50k will do two. The 8 Mile race is new in 2023 and is intended to welcome new trail runners. The 8-mile race will head out on the same course with the 25/50K but is an out-and-back. A limited number of 8 Mile spots will be available to preserve the same amount of 25/50K slots as in prior years. The trail itself varies from a gravel service road to a mostly dirt trail along the Meramec river, to a mile-long series of climbs, to finally a rolling trail that winds through the hills of the Meramec River. There are no stream crossings. If the Meramec River is well above flood stage then the race will be rerouted. There are two railroad crossings and extreme caution must be taken because the trains come through this area at a high rate of speed. Runners may see deer, turkey, and other wildlife throughout this trail run.