The Rockin'K trail run is four interconnected loop trails. These are the Horsethief Canyon Trail, Prairie Trail, Alum Creek Trail, and Big Bluff loops. Horsethief Canyon connects to Prairie Trail at Gate #1; Prairie Trail connects to Alum Creek Trail at gate #2 ; Alum Creek connects to the Big Bluff loop at gate #6. A simplistic description of the run is that you are going to run the north half of each loop going out, and the south half of each loop coming back.

The Rockin'K loop is the marathon loop. 21 mile runners will not run the Big Bluff Loop. All other runners will complete this loop. The 50K runners will run the Big Bluff loop a second time from the gate 6 aid station, before heading back to the finish at the Corral shelter.

The 4 mile course loops from the Corral shelter to Horsethief Canyon and back to the Corral shelter.