How may miles to birkenhead ferry port from sheffield?

93 miles taking this route:

1. Take A61 BARNSLEY or M1 to The NORTH, from Sheffield, to A628 to MANCHESTER. Follow signs.
2. Take A628 to M67 MANCHESTER (to M60 [to M56]).
3. Take M67 to M60 RING ROAD (S & W) (to M56 towards MANCHESTER AIRPORT).
4. Take M60 around MANCHESTER, on the RING ROAD, to M56 to CHESTER and WARRINGTON at J4.
5. Take M56 to M53 to BIRKENHEAD at J15.
6. Take M53 to Birkenhead, and follow signs to the FERRY DOCKS.