| Holyhead to Mickleover | 130.86 mi (210.60 km) |
| Holyhead to Middlesbrough | 163.57 mi (263.23 km) |
| Holyhead to Middleton | 102.11 mi (164.32 km) |
| Holyhead to Middlewich | 90.89 mi (146.27 km) |
| Holyhead to Midsomer Norton | 166.82 mi (268.48 km) |
| Holyhead to Mildenhall | 224.71 mi (361.63 km) |
| Holyhead to Milford Haven | 111.53 mi (179.49 km) |
| Holyhead to Mill Hill | 218.97 mi (352.39 km) |
| Holyhead to Milngavie | 182.38 mi (293.51 km) |
| Holyhead to Milnrow | 105.80 mi (170.27 km) |
| Holyhead to Milton | 104.68 mi (168.47 km) |
| Holyhead to Milton Keynes | 184.40 mi (296.76 km) |
| Holyhead to Minehead | 153.49 mi (247.02 km) |
| Holyhead to Minster | 263.97 mi (424.82 km) |
| Holyhead to Mirfield | 123.70 mi (199.08 km) |
