| Southborough to Mancha Real | 943.24 mi (1,517.99 km) |
| Southborough to Manilva | 1,056.63 mi (1,700.48 km) |
| Southborough to Manises | 807.51 mi (1,299.55 km) |
| Southborough to Manlleu | 640.03 mi (1,030.03 km) |
| Southborough to Manresa | 655.98 mi (1,055.70 km) |
| Southborough to Manzanares | 858.67 mi (1,381.90 km) |
| Southborough to Manzanares el Real | 747.28 mi (1,202.62 km) |
| Southborough to Maracena | 983.32 mi (1,582.50 km) |
| Southborough to Marbella | 1,043.11 mi (1,678.72 km) |
| Southborough to Marchena | 995.09 mi (1,601.44 km) |
| Southborough to Marin | 738.31 mi (1,188.19 km) |
| Southborough to Marratxi | 804.77 mi (1,295.15 km) |
| Southborough to Martorell | 673.85 mi (1,084.46 km) |
| Southborough to Martos | 951.59 mi (1,531.43 km) |
| Southborough to Masamagrell | 801.27 mi (1,289.52 km) |
