| Llantwit Major to Montijo | 876.66 mi (1,410.84 km) |
| Llantwit Major to Montilla | 956.74 mi (1,539.73 km) |
| Llantwit Major to Montmelo | 732.59 mi (1,178.98 km) |
| Llantwit Major to Montornes del Valles | 733.55 mi (1,180.54 km) |
| Llantwit Major to Montoro | 926.18 mi (1,490.54 km) |
| Llantwit Major to Monzon | 678.53 mi (1,091.98 km) |
| Llantwit Major to Mora | 810.06 mi (1,303.66 km) |
| Llantwit Major to Moralzarzal | 741.83 mi (1,193.86 km) |
| Llantwit Major to Moron de la Frontera | 991.67 mi (1,595.93 km) |
| Llantwit Major to Mostoles | 765.29 mi (1,231.62 km) |
| Llantwit Major to Motril | 1,012.65 mi (1,629.70 km) |
| Llantwit Major to Muchamiel | 909.65 mi (1,463.94 km) |
| Llantwit Major to Mula | 928.42 mi (1,494.14 km) |
| Llantwit Major to Munguia | 557.07 mi (896.52 km) |
| Llantwit Major to Murcia | 934.23 mi (1,503.50 km) |
