Southeast of Amarillo in Briscoe County, the Lake Mackenzie ATV Area has trails with plenty of climbs and descents.
To reach the riding area from Tulia, take TX-86 East toward Silverton. About 30 miles outside Tulia, you will reach the intersection of TX-86 and 207. Turn left, onto 207, and proceed North. About now, you will be wondering where in the totally flat, desolate, farmland we are going to have a trials competition. About 10 to 15 miles after you have turned on 207, you will start dropping down into Tule Canyon. Shortly thereafter, you will find the entrance to Lake MacKenzie on your left. Once you turn into the park, from 207, proceed to your left and across the dam. Beyond the dam, you will come to a split in the road. The park sign in area is easily seen, once you reach this point.
Overall, Lake Mackenzie is the 8th most popular ATV riding trail of all 27 ATV trails in Texas.