You will have fun, but being "just outside Custer", doesn't get you away from the craziness. The whole area, say 70 miles around from Sturgis, is all crazy. Custer Lead, Deadwood, Spearfish, Rapid City, Hill City, Keystone, are all crazy, and jam packed with cycles. Just allow yourself plenty of time to get from place to place. The Black Hills has become a "premier" area for off-road vehicle, too, like ATV's UTV's, Side by Sides, etc. They fill the campgrounds, when the Sturgis Rally is NOT on.