| Cwmbran to Mancha Real | 958.52 mi (1,542.59 km) |
| Cwmbran to Manilva | 1,060.70 mi (1,707.03 km) |
| Cwmbran to Manises | 849.85 mi (1,367.70 km) |
| Cwmbran to Manlleu | 712.07 mi (1,145.96 km) |
| Cwmbran to Manresa | 722.95 mi (1,163.47 km) |
| Cwmbran to Manzanares | 874.65 mi (1,407.61 km) |
| Cwmbran to Manzanares el Real | 755.95 mi (1,216.59 km) |
| Cwmbran to Maracena | 999.05 mi (1,607.82 km) |
| Cwmbran to Marbella | 1,049.80 mi (1,689.49 km) |
| Cwmbran to Marchena | 996.27 mi (1,603.35 km) |
| Cwmbran to Marin | 692.93 mi (1,115.16 km) |
| Cwmbran to Marratxi | 874.78 mi (1,407.83 km) |
| Cwmbran to Martorell | 741.13 mi (1,192.73 km) |
| Cwmbran to Martos | 964.00 mi (1,551.41 km) |
| Cwmbran to Masamagrell | 844.75 mi (1,359.49 km) |
