171 miles taking this route:
The distance between Holyhead UK and Swansea UK is about 170 road miles.
147 miles
Holyhead to Edinburgh is 319 miles.
Holyhead to Rhoscolyn = 5.1 miles.
About 288 miles on the M1, M6 and A55
356 miles
82 miles taking A55.
The driving distance is about 231 road miles.
doncaster to holyhead 168.5miles
Mapquest says about 229 miles (about 4 hours driving time).
196 miles in total (22 driving miles from Bangor to Holyhead ; 70 ferry miles from Holyhead to Dublin ; 104 driving miles from Dublin to Holyhead)Take A55 HOLYHEAD from Bangor to HOLYHEAD, where you will board a FERRY (toll) from Holyhead to DUBLIN, Republic of IRELAND.Take a FERRY (toll) from HOLYHEAD, U.K. into DUBLIN, REPUBLIC of IRELAND; the ferry is operated by STENA LINES.Once you are in Dublin, you will follow signs to the PORT EXIT; once you are out of the port, you will follow signs to M50 (M1) to the TOLLED TUNNEL.Follow M1 & N1 to to the NORTH from Dublin to NORTHERN IRELAND, U.K, where N1 continues as A1.Continue on A1 to M1 to BELFAST; follow signs to M1 to the NORTH to BELFAST.Take M1 to the NORTH to Belfast.For more information on the HOLYHEAD-DUBLIN FERRY, visit: http://www.stenaline.co.uk/ferry/
The driving distance is about 154 road miles and total driving time is approximately 3 hours.