List of highways numbered 680

The following highways are numbered 680.

Canada

 * Alberta Highway 680.svg Alberta Highway 680
 * Saskatchewan Highway 680

United States

 * I-680.svg Interstate 680
 * California 680.svg California State Route 680 (former)
 * OH-680 (1960).svg Ohio State Route 680 (1930s-1960s) (former)


 * Territories:
 * Ellipse sign 680.svg Puerto Rico Highway 680