List Of Highways Numbered 680
The following highways are numbered 680. Canada * Alberta Highway 680 * Saskatchewan Highway 680 United States * Interstate 680 * California State Route 680 (former) * Ohio State Route 680 (1930s-1960s) (former) ;Territories: * Puerto Rico Highway 680 {{Sequence , prev = 679 , list = Lists of highways , curr = 680 , next = 681 680 __NOTOC__ Year 680 ( DCLXXX) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 680 for this year has been used since the early medieval period, when the Anno Domini calendar era ...