| Southborough to Massarosa | 687.75 mi (1,106.83 km) |
| Southborough to Matelica | 807.87 mi (1,300.15 km) |
| Southborough to Matera | 1,064.34 mi (1,712.89 km) |
| Southborough to Matino | 1,150.83 mi (1,852.09 km) |
| Southborough to Mazzarino | 1,175.96 mi (1,892.53 km) |
| Southborough to Meda | 556.69 mi (895.90 km) |
| Southborough to Medesano | 635.09 mi (1,022.08 km) |
| Southborough to Medicina | 699.27 mi (1,125.36 km) |
| Southborough to Meldola | 730.96 mi (1,176.36 km) |
| Southborough to Melegnano | 577.38 mi (929.21 km) |
| Southborough to Melendugno | 1,146.10 mi (1,844.47 km) |
| Southborough to Melfi | 1,014.25 mi (1,632.28 km) |
| Southborough to Melilli | 1,209.32 mi (1,946.20 km) |
| Southborough to Melito di Napoli | 971.34 mi (1,563.22 km) |
| Southborough to Melito di Porto Salvo | 1,187.17 mi (1,910.56 km) |
