title: List of highways numbered 668
text: # List of highways numbered 668
  
  The following highways are numbered 668:
  
  ## United States
  
  * LA 668
  * MD 668
  * PR-668
  * FM 668
  
  | Preceded by 667 | Lists of highways 668 | Succeeded by 669 |
  | - | - | - |
  