This trail provides all aspects of mountain biking. Amazing flow, techy sections, slickrock, drops, you-name-it!
Head up W Canyon View Dr. on the west side of St. George until it ends and becomes BLM land. You'll drop down from the mesa into the desert where you'll see trails going off in every direction.
As you look West from this point, there is a large gap in the land that rises before you. If you stay to the left side of this gap and follow the fire road up, staying along the north side of the ridge, the fire road eventually turns into trail in about 1/4-mile.
At this point you simply follow the Zen trail to the top, where you'll crest the mesa and get stunning views of the desert landscape. From this point, following the Zen trail in the counter-clockwise direction, it is mostly downhill with a few short sections of climbing. There is one spot where the trail splits and you want to stay LEFT. If you want to go right it will take you down to a fire road where you can head north back to where the loop starts.