Start off on smooth singletrack with intermediate riding, go down and up through a wash, and then look for a nice overlook on the left for views of the town. After then, continue on fun trail and descend to Oak Creek. You'll then parallel Oak Creek for about a mile. It's very pretty but the trail is littered with soccer-ball size polished-smooth rocks. So despite the lack of elevation change, the going is pretty slow.
Eventually you'll be below Midgley Bridge and highway 89. Cross the stream here, which may be a few feet deep (though you can probably stay dry by hopping rocks). Tough climbing leads up and out of the canyon. Take a left and you'll be at the trail's end at the Midgley Bridge trailhead and Oak Creek Vista.
Look out for poison oak along the creek bottom.
There might be a slight preference for the South-to-North direction, as described here, but it's good either way.