Santa Ana Mountains Trail Head

Good steep trails. Parking is free at the Elementary but only during non business hours.

Great hiking with dog. Watch out for bikers coming downhills. No shade. Bring plenty water. Only restroom is, near the Elementary School so go before heading up to the trails.

I would want to rate 4.5 but oh well...
The down sides are: there are no public restroom along the trails, no trash cans as far as I can see.
Great parking - only on weekends or non-business hours.
Long trails of levels from easy to medium, nothing too dangerous for hikers but there are many challenging paths for bikers.
Lots of bikers. Also great for dogs as well.
It's totally worth your time and effort!

Loved the view. Hiking easy trail.

Lots of hills, a great workout.