- A678 between A6078 and A679, Blackburn with Darwen (Grid ref SD696282)
- A678 between A677 and A6119 roundabout, Blackburn with Darwen (Grid ref SD702284)
- A678 between A6119 and Blackburn with Darwen boundary, Blackburn with Darwen (Grid ref SD707287)
- A678 between Lancashire boundary and M65, Lancashire (Grid ref SD708288)
- A678 between M65/A119 and Woodside Ave, Rishton, Lancashire (Grid ref SD712294)
- A678 between Woodside Avenue and B6535, Lancashire (Grid ref SD721300)
- A678 between B6535 and Holt St, Lancashire (Grid ref SD729303)
- A678 between Holt St, Rishton and A6185, Lancashire (Grid ref SD740303)
- A678 between A6185 and A680, Lancashire (Grid ref SD746303)
- A678 between A680 and Higher Firs Drive roundabout, Lancashire (Grid ref SD753310)
- A678 between Higher Firs Drive, Clayton-le-Moors and A6068, Lancashire (Grid ref SD760319)
- A678 between A6068 and A671, Lancashire (Grid ref SD785336)