Draper trailhead locations:
Lower Corner Canyon Trailhead (Equestrian Center): Take the Bluffdale exit from I-15 and turn east towards the mountains. Continue on Highland Drive until you reach the ballpark parking lot. Directly across the street from the parking, the Lower Corner Canyon trail heads uphill (GPS N 40° 30.351' W 111° 50.721'). To reach the trailhead from the north (Sandy area), take 13th East southward until it ends at the stop sign just past the underpass. Turn left and drive 1/4 mile, then turn left into the paved parking area. Start riding by going under the street and keeping left on the Corner Canyon Trail, connecting to Ghost Falls, Canyon Hollow, or Clarks at mile 1.2. (Bathroom at this TH.)
Coyote Hollow trailhead: Take the Bluffdale exit from I-15 and turn east towards the mountains. Climb the hill as above, but turn right at the light on Traverse Mountain Road. After one mile, turn into Mike Weir Drive on your left. Pass the Mike Weir trailhead 1/2 mile later and continue another half mile until the road veers left downhill. Take the next right turn, turn right again, then left. You should now be on Gray Fox Drive. Take the next right into Coyote Hollow Court. The parking is on the right at the end of the pavement. As you start riding, keep R uphill for Clarks, left and slightly downhill on the Silica Pit trail to reach Canyon Hollow or Ghost Falls.
Bonneville Shoreline on Corner Canyon Road:  From Draper, take 123rd South to 13th East and turn south (right). At the roundabout just down the hill, turn east (the equivalent of a left turn at the roundabout) on Pioneer Road. Go around one mile to 20th East, then turn right going south. To start riding on the CC Road, turn left into the paved parking area (GPS N 40° 31.281' W 111° 50.081'). Bike or drive one mile up Corner Canyon to the Bonneville Shoreline trailhead on your right (N 40° 30.364' W 111° 50.094'). From here, either continue up the road, or take the BST downhill to Ghost Falls, Canyon Hollow, or Clarks. (Bathroom at this TH.)
Ghost Falls TH:  If you drive a little further up the Corner Canyon Road (see above), you'll reach the next trailhead, which is Ghost Falls. (Bathroom at this TH.)
Peak View TH (Traverse Ridge):  On Suncrest Drive 1/2 mile below the stop sign, turn east on Canyon Pointe Drive. Drive 0.7 miles to the end of the paved road and the trailhead.
Potato Hill TH: Take the Bluffdale exit from I-15 and turn east towards the mountains on Highland Drive. At the light at the top of the hill, turn right on Traverse Mountain Road. After one mile, pass Mike Weir Drive on your left. Look for the Potato Hill TH on your left about mile 1.3 from the light. Start by riding through the fence, turn R immediately. Next keep R as Potato Hill trail turns north. Connect to Ann's and turn left. Climb Ann's to Clark's, and on to the Peak View trailhead.
Red Rock (Mike Wier) trailhead: Leave I-15 and climb the hill as above, but turn right at the light on Traverse Mountain Road. After one mile, turn left onto  Mike Weir Drive. The Red Rock trailhead parking is on your right, 1/2 mile later.
Corner Canyon Road TH: Reached by taking Pioneer Road to 20th East, then turning south (right). Parking is on the left.
Maple Hollow (Elk Glen) trailhead:  At stop sign at top of Suncrest, go west about one mile on Deer Ridge Drive (pass Oak Vista trailhead) and turn right into parking area. Trail is at back of parking. Connects to Eagle Crest, Maple Hollow.
Eagle Crest trailhead:  At the stop sign at the top of Suncrest, go south on Traverse Ridge Road to the trailhead.
Oak Vista trailhead: From stop sign at top of Suncrest, go west 1/2 mile on Deer Ridge Drive. TH is on the right.
Suncrest Drive (access via Mercer Hollow or Fango/Woods Hollow):  There's room for 3 or 4 cars at the bottom of the doubletrack portion of the Mercer Hollow on Suncrest Drive.
Brookside Drive Trailhead (South Maple Hollow):  Brookside Drive turns to the west off Suncrest Drive, just uphill from the Maple Hollow subdivision. This is about a mile uphill from Utah Valley. Drive past the homes and uphill to the end of the road.

Alpine trailheads:  (NOTE! These options make for a LONG ride! Also, access from Alpine may change as more formal trailhead parking is developed.)
Angel Gate (Spring Hollow, Hog Hollow): On Westfield Road, turn uphill (north) on Beacon Hill Blvd. Drive 0.5 miles, then as Beacon Hill turns to the right (east), turn left on Lighthouse Drive to continue straight north uphill. Lighthouse will become Angel Gate. Keep straight until you pass the irrigation facility, then park. At the northeast corner of the fence, a doubletrack descends north then east across the hollow. Immediately after crossing the creek, turn left on Hog Hollow.
Westfield: On Westfield Road 0.7 miles west of the stop sign where it ends on 200 North, spot the metal gate on the north side of the road near the school crossing. The doubletrack that heads uphill through the gate is the Hog Hollow trail.
Alpine Cove:  On Alpine's Grove Drive, go to the T intersection (where a right turn would take you across the bridge into Lambert Park), and turn left on Alpine Cove Drive. At the 4-way intersection, turn left. As Alpine Cove Drive turns downhill, turn uphill on Aspen Drive. It will turn to the gravel Schoolhouse Springs Road. 100 feet later, the fire road forks left. Note the gate just uphill. Find a spot to park and return to the gate to start your ride. There's room for 3 cars at the road fork (where the boulders have been pushed aside as semi-official parking) plus 4 spots on the shoulder within 50 feet. Take the Nephs Lake trail up to the Three Forks trail to connect to Peak View. Note that just to Peak View and back is 14.8 miles with 2200 vertical feet of climbing. Add that to whatever ride you're going to do in Corner Canyon.
Fort Canyon: As you drive into Alpine on Main Street, keep straight at all intersections until you reach 800 North. Then, just as Main Street turns to the right and becomes Heritage Hills Drive, fork left on Fort Canyon Road to continue north. 0.9 miles later, turn right just before the Three Falls entry. Turn left into parking. This route adds 10 miles and 1700 feet of climbing to your Corner Canyon ride.