Topanga Lookout trail is one of the special trails in LA area. It's a pretty easy hike/walk as it stays flat until you reach the final incline stretch. The lookout is one of the highest points in Santa Monica Mountains. The trail to the lookout is approximately 2 miles out & back. The trail begins past the gate near Vista Point. Take the paved trail until you come to a fork. From here, continue on the dirt path to your left (the trail to your right will take you up to some radio towers).