Big Bend Ranch State Park is no joke. Two weeks before we were there, a man came of the bike on a rugged down hill, broke his femur, and the park rangers took 3 days to get in by horseback, and get him out to an area he could be air lifted for surgery. It's rugged, remote, and should be taken seriously. In fact, more seriously than we took it because we just had not idea it could be as challenging as it turned out to be. That being said, there are areas that are easily navigated and easy to ride, so just take the info from park rangers seriously when you check in and plan your route with them.