A very straight forward trail and I do mean that literally as well as figuratively. It gets kinda boring because the first 3 or so miles in from the trailhead doesn't have much variation - you're walking on a gentle incline on a very straight and wide dirt/gravel path the whole time and it's not until right before the first 3 way junction to the Sullivan Ridge trail where the terrain and hiking becomes more interesting and challenging. The shade is nice but it's not so shady as say either of the Temescal Ridge, Rivas Canyon or Hondo Canyon trails. We added the walk up to Dirt Mulholland just to get some additional miles in - AllTrails says 10.1 miles out and back, where my Fitbit GPS says 10.49 instead. The smell of the clay/gravel and maybe the gas pipeline that follows you on the entire trail isn't particularly nice either - maybe it's just me but it kinda smelled metallic or dusty. Also lots of bugs which isn't a problem if you don't forget the insect repellant, but we did. Also as of today (June 2016) there was huge tree that had fallen down and landed right across the path. Mountain bikers and hikers alike had to stop and scramble over it whilst trying to avoid the poison oak and copious bugs. Also if mountain bikers aren't your thing, would suggest avoiding - this trail is so wide and relatively steady that it attracts bikers, some of whom obnoxiously tear down the path, leaving a wake of dust behind them even though there are bikers around. Maybe better for trail runners but as a hiker that enjoys varied terrain and different things to look at, this is one of the lesser trails to do. Glad I did it but don't feel the need to do it again anytime soon.
Susan O. on Sullivan Canyon Trail
Lovely easy and quiet afternoon walk - went by public transport and walked up Old Ranch Road taking little horse trail off to right of road near end to reach the Canyon path (if you get to big gate at end you have gone too far). Then back by Sullivan Fire Road and Capri to Sunset. Bus 2 both ways. 4 hours from Sunset.
Emilia c. on Sullivan Canyon Trail
It was a really nIce hIke, it was really exciting because I didn't, in a great day I check it with my phone by my phone got wet, so so I repair I will post some pictures, I thought I was the only one doing in the rain but there were a lot of people, it's quite nice trail.
Very nice easy to moderate walk through a canyon. Pretty gentle . Parking is not great. The streets around the trailhead are residential and have various areas marked "No Parking 7am to 7pm" so you have to pay attention to the sigs. We crossed many more mountain bikers than hikers on the path. The hiking path is well defined and easy to follow.