The RAT routes are primarily dirt and gravel roads. Some of which are EXTREMELY rugged and remote. Less tha 20% of the route is paved and some of the "paved" sections are rougher than the dirt roads. Traditional road and touring bikes will not be able to complete this course. Recumbents will not be able to complete it. Be sure to wear shoes that will allow for a good deal of walking/pushing a bike. DO NOT bite off more than you can chew.