| Southborough to Manassas (Virginia) | 3,713.83 mi (5,976.83 km) |
| Southborough to Manassas Park (Virginia) | 3,711.12 mi (5,972.47 km) |
| Southborough to Manatí (Puerto Rico) | 4,231.39 mi (6,809.76 km) |
| Southborough to Manchester (Missouri) | 4,240.24 mi (6,824.00 km) |
| Southborough to Manchester (New Hampshire) | 3,284.91 mi (5,286.55 km) |
| Southborough to Manchester (Tennessee) | 4,216.17 mi (6,785.27 km) |
| Southborough to Manchester (Virginia) | 3,773.01 mi (6,072.07 km) |
| Southborough to Mandan (North Dakota) | 4,213.51 mi (6,780.99 km) |
| Southborough to Mandeville (Louisiana) | 4,630.25 mi (7,451.67 km) |
| Southborough to Mango (Florida) | 4,427.31 mi (7,125.07 km) |
| Southborough to Manhattan (Kansas) | 4,441.10 mi (7,147.27 km) |
| Southborough to Manhattan (New York) | 3,480.25 mi (5,600.92 km) |
| Southborough to Manhattan Beach (California) | 5,483.38 mi (8,824.65 km) |
| Southborough to Manitowoc (Wisconsin) | 3,874.08 mi (6,234.73 km) |
| Southborough to Mankato (Minnesota) | 4,102.19 mi (6,601.83 km) |
