I'm in. I think this is the fifth time.
Yes, but it's hard dirt. Lots of potholes and some broken pavement. If you've ever ridden in Rancho Santa Fe, you'll be fine.
Fourth for me, though I'm just not feeling it this year...
I love Jackrabbit trail. It always reminds me that all you really need is passable road an inch or two wide to keep moving forward. It just doesn't all have to be connected in a nice straight line.