Rides in Arrowhead/Big Bear/San Gorgonio Mtns.?

I’m moving up to Lake Arrowhead at the end of October. Currently I’m doing almost all of my training in the Angeles National Forest, but I think it’ll be too far a daily drive to keep that up. If any of you have any suggested routes in the Lake Arrowhead, Big Bear, and San Gorgonio Mtns. vicinity please let me know what they are.