Skyline Drive runs 105 miles north and south along the crest of the Blue Ridge Mountains in Shenandoah National Park and is the only public road through the park.
You can enter Shenandoah at four places. Front Royal at U.S. 340; Thornton Gap at U.S. 211; Swift Run Gap at U.S. 33; and Rockfish Gap at I-64 / U.S. 250 (also the northern entrance to the Blue Ridge Parkway).
It takes about three hours to travel the entire length of the park on a clear day. The speed limit on the drive is 35 MPH. Thornton Gap Entrance Station (Mile 31.5) is accessible via U.S. 211 east of Luray.
RVs, camping trailers and horse trailers are welcome, but be prepared to shift into low gear. Also, be sure you will clear Marys Rock Tunnel (just south of Thornton Gap entrance station) at 12’8”.
Check the park website for entrance fees and other information.