This trail start from the weather station off the Summit to Summit Motorway and snakes down into the Summit Valley Edmund D. Edelman Park park. There is a parking lot at the bottom, but you need to pay $5 to park. If you don't want to do that, park at the end of Viewridge Road.
The trail is well-maintained, hard packed and contain several jumps (some are doable for an intermediate rider like me). You'll follow the ridgeline most of the way until it intersects with the Ed Edelman North Loop Trail. I think the best way to ride this trail is to climb Topanga Canyon Boulevard and ride this trail down again, and again and again (yes it's that fun)!