Veronica:

Thanks for the input. I'll have to do more research. I found a few places online that said that mountain biking was not allowed. Maybe there's still a few places I could go. I mountain bike WAY more than I road bike, and I'm just more confortable on the fatty. So if I'm in an unfamiliar place, I think my mountain bike might be the answer. BUT.... I'll be by myself, and it is a lot easier to get lost mountain biking!

I'll let you know what I figure out.