The race is run on the popular Chubb trail.  The 25k will do one out & back & the 50k will do two. 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, 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.

Runners will enjoy the distinctive neighborhoods like Hein Park and Evergreen’s Stonewall St. whose cheer parties will keep your spirits up and energy level high. The route also includes a two loop-run through beautiful Overton Park. Runners will head back to Danny Thomas Blvd. and return downtown via Union Ave. to celebrate at the finish line by AutoZone Park.

Average high/low: 56°F/38°F

The Leadville Trail Marathon is 26.2 miles of out-and-back dirt roads and single track that takes you through the historic mining district on the east side of Leadville. The Heavy Half consists of 15.46 miles along the same path as the marathon minus the Ball Mountain section. The course is primarily on old mining roads and trails, topping out at 13,185 feet at Mosquito Pass. This is the HIGHEST continuous pass in the country and the highest trail Marathon in the USA! There is a chance you’ll see snow on the course. The courses will be well marked with fluorescent pink-and-black striped ribbon and flour arrows on the ground.