| Middlesex to Mankato (Minnesota) | 1,022.06 mi (1,644.85 km) |
| Middlesex to Manor (Texas) | 1,468.98 mi (2,364.09 km) |
| Middlesex to Manorville (New York) | 91.64 mi (147.48 km) |
| Middlesex to Mansfield (Ohio) | 420.69 mi (677.03 km) |
| Middlesex to Mansfield (Texas) | 1,366.49 mi (2,199.16 km) |
| Middlesex to Manteca (California) | 2,480.41 mi (3,991.84 km) |
| Middlesex to Manville (New Jersey) | 5.14 mi (8.27 km) |
| Middlesex to Maple Grove (Minnesota) | 1,007.63 mi (1,621.62 km) |
| Middlesex to Maple Heights (Ohio) | 372.65 mi (599.72 km) |
| Middlesex to Maple Valley (Washington) | 2,371.64 mi (3,816.79 km) |
| Middlesex to Mapleton (Utah) | 1,937.87 mi (3,118.71 km) |
| Middlesex to Maplewood (Minnesota) | 984.97 mi (1,585.15 km) |
| Middlesex to Marana (Arizona) | 2,095.41 mi (3,372.24 km) |
| Middlesex to Marco Island (Florida) | 1,092.76 mi (1,758.63 km) |
| Middlesex to Margate (Florida) | 1,042.67 mi (1,678.02 km) |
