Clockwise is the best way to ride this one, with nice singletrack and a slow climb to the halfway mark then high speed doubletrack back to the parking lot.
Need to Know
Check the park web page for entry fees and possible closures for special events.
The ride is done both clockwise and counter-clockwise, but this description is for clockwise. Start early, as it can be warm in winter and un-rideable in summer. Leave the parking lot on well-marked trail leaving from the southwest corner. From here, it's flat riding until you cross the paved road, at which point you begin a slow, easy climb most of the way to the 9-mile mark.
As you get closer to the McDowell Mountains, the trail gets a little more interesting with large saguaros and some rock outcroppings. At the 9-mile mark, the singletrack turns to doubletrack and exhibits some great high speed riding back to the parking lot.