| Merthyr Tudful to Mozzate | 699.32 mi (1,125.44 km) |
| Merthyr Tudful to Muggia | 886.94 mi (1,427.39 km) |
| Merthyr Tudful to Muggio | 713.41 mi (1,148.13 km) |
| Merthyr Tudful to Mugnano di Napoli | 1,119.18 mi (1,801.15 km) |
| Merthyr Tudful to Musile di Piave | 838.87 mi (1,350.03 km) |
| Merthyr Tudful to Mussomeli | 1,284.36 mi (2,066.97 km) |
| Merthyr Tudful to Naples | 1,124.49 mi (1,809.69 km) |
| Merthyr Tudful to Nardo | 1,293.97 mi (2,082.45 km) |
| Merthyr Tudful to Narni | 978.41 mi (1,574.60 km) |
| Merthyr Tudful to Nembro | 726.36 mi (1,168.97 km) |
| Merthyr Tudful to Nepi | 986.15 mi (1,587.06 km) |
| Merthyr Tudful to Nerviano | 706.62 mi (1,137.20 km) |
| Merthyr Tudful to Nettuno | 1,037.02 mi (1,668.93 km) |
| Merthyr Tudful to Nichelino | 686.70 mi (1,105.14 km) |
| Merthyr Tudful to Nicosia | 1,295.31 mi (2,084.59 km) |
