| Southend to Mancha Real | 973.96 mi (1,567.44 km) |
| Southend to Manilva | 1,088.11 mi (1,751.14 km) |
| Southend to Manises | 835.59 mi (1,344.75 km) |
| Southend to Manlleu | 663.99 mi (1,068.58 km) |
| Southend to Manresa | 680.80 mi (1,095.64 km) |
| Southend to Manzanares | 889.44 mi (1,431.41 km) |
| Southend to Manzanares el Real | 778.75 mi (1,253.28 km) |
| Southend to Maracena | 1,013.96 mi (1,631.81 km) |
| Southend to Marbella | 1,074.42 mi (1,729.11 km) |
| Southend to Marchena | 1,026.81 mi (1,652.50 km) |
| Southend to Marin | 771.36 mi (1,241.38 km) |
| Southend to Marratxi | 828.57 mi (1,333.46 km) |
| Southend to Martorell | 698.54 mi (1,124.20 km) |
| Southend to Martos | 982.54 mi (1,581.24 km) |
| Southend to Masamagrell | 829.22 mi (1,334.50 km) |
