Interstate 81 thru VA and PA is a very scenic ride, although you will have some heavy traffic in southern PA. I have not been further north than PA on 81.
If you do take 81 there are some great trails in PA just off 81 in the old coal country. Both AOAA and Rausch Creek have several trails for all skill and rig levels. They both have fees and require groups of at least 2 vehicles. If you are unable to find someone to go with you thru BN, Off Road Consulting runs guided trail rides at both parks.
The crew at Off Road Consulting is great! I took an offroad training course with them since I have been unable to get to an Off-Roadeo location yet. It was a fun and educational time, well worth the money.
www.aoaatrails.com
www.rc4x4.org
offroad-consulting.com
Have a great trip!
2DR Badlands, Iconic Silver, 2.7/10 speed, Mod. bumper, MIC, MID, Tow.