From Aztec Tiger Park, follow the orange arrows/ATOS sign up the dirt road. The first 1¾ miles are primarily roads with small sections of singletrack mixed in there. Just keep following the arrows. You cross the highway at about 0.8 miles. Continue in a northerly direction past the go kart track and a large pole with a vintage bicycle on it and veer onto the singletrack, as the arrows and ATOS sign indicate. About a half mile later, reach a fork and follow the yellow arrow to the north to continue the clockwise loop (the orange arrow leads the way for a counterclockwise loop). You will come back to this junction later. Cross a wash and two service roads, picking up the trail at the obvious spot on the other side of the crossings. Cross another road approximately ⅛ mile later. The trail then winds through the woodlands and over a few rocks. Again, follow the defined and well-worn trail. The trail then comes to a dead end at a service road (approximately 2.9 mi mark). Turn right. After about 0.1 miles, look for a singletrack trail veering off to your right and resume the loop. Cross another road, climb up a steep ridge to a 'Y' junction with another trail. Stay left. (Going right will allow you to complete a shorter version of the loop by going up and over a couple of steep ridges.) Cross a road and reach a junction with another road soon thereafter. Pick up the trail on the other side of the road, marked with a blue arrow. Go up another steep but short hill and follow the trail around a well. Continue in a southeasterly direction, eventually curving west, crossing a number of roads, wells, and washes. Ascend a ridge, which includes riding on a large sandstone, then enjoy a fun descent back down the other side. Enjoy the amazing view of the Four Corners area landscape from the top of the ridge and along the descent (being careful not to lose traction on any sand). Continue straight at junctions with trails and roads (one of these being the trail for the shorter route mentioned earlier). The route then winds through pinon and juniper trees to a junction with a dirt road. Continue straight. The trail will eventually curve southwest. After that, enjoy a two mile section which is probably the most fun part of the ride (heading west again). There are a number of dips, curves, and banked turns. Also it seems there is less sand here, so this is where speed can pick up. After crossing a wide wash and climbing a short hill, come to a dead end. This is the junction encountered at the beginning of the ride. Turn left and follow the arrows back to your vehicle (or turn right and go for another round).