Paved, just some steep grades. See everything from older Class Cs (with huge, gas guzzling V8s) Big 5th wheels bulled by one ton trucks to diesel pushers, just no older Toyotas. Getting up to some of our our favorite spots, my 2002 Astro Van can barely pull my 19ft trailer up the hill at 10 to 15 mph, borrowed a 5.8l F150 and it pulled it up the hill at about 25-30, so vehicles that seem to have sufficient power don't fly up the hill. Of course, they are pulling their weight plus the weight of my trailer.