| Thornton Heath to Montijo | 918.51 mi (1,478.20 km) |
| Thornton Heath to Montilla | 979.87 mi (1,576.95 km) |
| Thornton Heath to Montmelo | 689.35 mi (1,109.41 km) |
| Thornton Heath to Montornes del Valles | 690.19 mi (1,110.75 km) |
| Thornton Heath to Montoro | 947.81 mi (1,525.36 km) |
| Thornton Heath to Monzon | 655.86 mi (1,055.51 km) |
| Thornton Heath to Mora | 828.47 mi (1,333.29 km) |
| Thornton Heath to Moralzarzal | 763.54 mi (1,228.81 km) |
| Thornton Heath to Moron de la Frontera | 1,020.63 mi (1,642.55 km) |
| Thornton Heath to Mostoles | 785.46 mi (1,264.07 km) |
| Thornton Heath to Motril | 1,025.98 mi (1,651.15 km) |
| Thornton Heath to Muchamiel | 897.44 mi (1,444.28 km) |
| Thornton Heath to Mula | 925.41 mi (1,489.31 km) |
| Thornton Heath to Munguia | 570.36 mi (917.90 km) |
| Thornton Heath to Murcia | 928.16 mi (1,493.73 km) |
