| Holyhead to Mancha Real | 1,073.62 mi (1,727.82 km) |
| Holyhead to Manilva | 1,169.83 mi (1,882.66 km) |
| Holyhead to Manises | 975.41 mi (1,569.76 km) |
| Holyhead to Manlleu | 844.13 mi (1,358.49 km) |
| Holyhead to Manresa | 854.34 mi (1,374.93 km) |
| Holyhead to Manzanares | 990.70 mi (1,594.38 km) |
| Holyhead to Manzanares el Real | 870.06 mi (1,400.23 km) |
| Holyhead to Maracena | 1,114.06 mi (1,792.90 km) |
| Holyhead to Marbella | 1,160.30 mi (1,867.32 km) |
| Holyhead to Marchena | 1,104.45 mi (1,777.45 km) |
| Holyhead to Marin | 777.09 mi (1,250.60 km) |
| Holyhead to Marratxi | 1,006.26 mi (1,619.42 km) |
| Holyhead to Martorell | 872.52 mi (1,404.18 km) |
| Holyhead to Martos | 1,077.79 mi (1,734.54 km) |
| Holyhead to Masamagrell | 970.66 mi (1,562.12 km) |
