We recently stumbled onto Lake Gregory Regional Park in Crestline while on vacation in Lake Arrowhead with our 10 year old daughter and our dog. Lake Gregory is about a 20 minute drive from there and turned out to be a fun getaway and great way for all of us to be active.
We took a walk around the lake with the dog and even stopped in at the sweet little dog park to let him run around. The 2.5 mile path was lovely and shady and pretty flat, and gave us spectacular views of the small but serene lake. There were a few water fountains around the lake, but you should carry water if you walk in the warm weather. There were plenty of bathrooms along the way.
After a walk, my husband and daughter went to the beach (note that there are no dogs allowed on the main swimming beach so I just took our guy out for another hike around the lake). The young