| Southborough to Luzzara | 642.73 mi (1,034.38 km) |
| Southborough to Luzzi | 1,118.00 mi (1,799.25 km) |
| Southborough to Macerata | 821.06 mi (1,321.37 km) |
| Southborough to Macerata Campania | 964.35 mi (1,551.97 km) |
| Southborough to Macomer | 856.20 mi (1,377.91 km) |
| Southborough to Maddaloni | 969.97 mi (1,561.02 km) |
| Southborough to Magenta | 557.58 mi (897.34 km) |
| Southborough to Magione | 786.01 mi (1,264.96 km) |
| Southborough to Maglie | 1,146.57 mi (1,845.23 km) |
| Southborough to Magnago | 549.08 mi (883.66 km) |
| Southborough to Malalbergo | 684.39 mi (1,101.42 km) |
| Southborough to Malnate | 540.58 mi (869.98 km) |
| Southborough to Malo | 635.69 mi (1,023.04 km) |
| Southborough to Mandello del Lario | 549.48 mi (884.30 km) |
| Southborough to Manduria | 1,114.34 mi (1,793.36 km) |
