- Western Terminus:
- West Virginia-Maryland state line
- Eastern Terminus:
- I-70 and US 522 in Hancock
- 80.68 miles
- Garrett, Allegany, Washington
I-68 is an east/west interstate highway through the Appalachian Mountains from I-79 in Morgantown, West Virginia, to I-70 in Hancock, Maryland. The section in Maryland is known as the National Freeway because it is the freeway alternative to the National Road, one of the early cross-country roads that roughly corresponds to present-day US 40. I-68 is designated Corridor E of the Appalachian Development Highway System, a network of highways intended to provide better access to and from Appalachia, thereby promoting economic development in the region.