Runyon canyon is a great workout if you keep a good hiking pace or run it, lots of steep hills. It has beautiful views of the city, but its' not one of the prettiest trails in LA. This is a nice one to go to if you just want to go get a good workout in. It is the most crowded hiking trail I've ever been on, mostly young hollywood types. If you're looking for something very calm and serene definitely pick another park.
more