Mile 0.0 - The North Ridge Trail begins at the North Skyline Boulevard parking area and is a steep downhill fireroad that has a lot of rocks and water rills. Mile 0.9 - Turn left on Whittemore Gulch Trail. This singletrack cuts across the side of the hills and zig zags slowly down with a few switchbacks. The first part of the ride is in the open chaparrel. The second half is in the Redwoods. Mile 3.5 - At the bottom of the hill, turn left on the Harkins Ridge Trail, which is a fireroad. The climb out begins. Mile 5.9 - Turn left onto the Singletrack. This is a fun little trail that descends for 0.3 miles, and then climbs the same. Mile 6.5 - Turn right on North Ridge Trail and climb back towards the parking lot. Mile 6.8 - End of ride.