I realize this thread is over a week old, but if you're still looking for some trails....
There are a few trails around Palomar Mountain, though they maybe closed due to the fires last year. There is Main Divide Road off of Ortega Highway, above Lake Elsinore, there are a few trails out near Hemet, and there's the Big Bear Area.
If you're interested, you're welcome to join in on a run on July 26th up in Big Bear. You can check out 4x4him.org, go to 'Wheeling & Events' > Chapters of 4x4Him > Southern California > SoCal July Run
Sorry for the convoluted way of pointing it out to you, but since my post count is currently less than 5 posts, I can't post a link
