Rosecrest Bench

The Juniper Crest loop is 4.8 miles, with a connection to the unfinished Firebreak Trail. In this area there are multiple old four-wheeler trails that cross, plus a couple of shortcuts and connectors. For your first ride, it's best to start at the connector just south of the church on Juniper Crest Drive and ride the loop counterclockwise.
This is what you're looking for. Just to the right of this photo is the church. As you start out, be sure to quickly veer right on singletrack uphill, leaving the old ATV path along the road.

The trail has about 300 feet of elevation change over the course of the loop. The church trailhead starts at mid-altitude and climbs to the loop. So you'll have an initial climb of 150 vertical feet, then as you close the loop you'll climb the whole 300 before dropping back down to Juniper Crest Drive. Overall climbing will be about 600 vertical feet.

Near the south end of the loop, we're seeing Lone Peak and Timpanogos towering over Traverse Ridge.

The trail is an easy ride. There's nothing tricky. After the initial climb from the church, fork left to get onto the loop at mile 0.3. The trail will head southeast along the edge of the mountains. Ignore any crossing dirt roads.
At 1.7 miles, the trail descends a wash down to Juniper Crest (mile 2.4). (There's no connection here, the trail simply rides along the fence for a short distance.)

The trail then turns and climbs along a shallow canyon back up to the homes of Herriman. As you approach houses, keep to the right at a trail fork at mile 3.4. (The left path goes to the work area at the current end of Juniper Crest as of 2014 and is -- temporarily -- being used as an alternate access point.)
Climbing northwest back toward the homes.

Turn left on the paved path at mile 3.6, climbing uphill. Pass under Juniper Crest to singletrack and keep climbing straight-ish uphill. Keep straight as you pass a connector on the left at mile 4.1.
After the trail veers left on steeper slope, you'll arrive at a 4-way at mile 4.3. To complete the loop, keep straight and level as a trail heads uphill (Firebreak) on your right and another trail angles to the left downhill (see map).