| Middlesex to Morristown (New Jersey) | 15.41 mi (24.80 km) |
| Middlesex to Morristown (Tennessee) | 563.69 mi (907.18 km) |
| Middlesex to Morrisville (North Carolina) | 403.00 mi (648.57 km) |
| Middlesex to Morro Bay (California) | 2,520.66 mi (4,056.61 km) |
| Middlesex to Morton (Illinois) | 784.24 mi (1,262.11 km) |
| Middlesex to Morton Grove (Illinois) | 696.34 mi (1,120.65 km) |
| Middlesex to Moscow (Idaho) | 2,139.58 mi (3,443.32 km) |
| Middlesex to Moses Lake (Washington) | 2,244.45 mi (3,612.09 km) |
| Middlesex to Moss Bluff (Louisiana) | 1,265.43 mi (2,036.52 km) |
| Middlesex to Moss Point (Mississippi) | 1,053.23 mi (1,695.02 km) |
| Middlesex to Moultrie (Georgia) | 831.16 mi (1,337.62 km) |
| Middlesex to Mounds View (Minnesota) | 995.42 mi (1,601.98 km) |
| Middlesex to Mount Airy (North Carolina) | 433.52 mi (697.69 km) |
| Middlesex to Mount Clemens (Michigan) | 454.89 mi (732.07 km) |
| Middlesex to Mount Dora (Florida) | 907.18 mi (1,459.96 km) |
