| Middlesex to Mitchell (South Dakota) | 1,220.67 mi (1,964.48 km) |
| Middlesex to Mitchellville (Maryland) | 167.08 mi (268.89 km) |
| Middlesex to Moberly (Missouri) | 951.05 mi (1,530.56 km) |
| Middlesex to Mobile (Alabama) | 1,023.51 mi (1,647.18 km) |
| Middlesex to Modesto (California) | 2,472.47 mi (3,979.05 km) |
| Middlesex to Mokena (Illinois) | 699.41 mi (1,125.59 km) |
| Middlesex to Moline (Illinois) | 834.65 mi (1,343.25 km) |
| Middlesex to Moncks Corner (South Carolina) | 594.88 mi (957.36 km) |
| Middlesex to Monfort Heights (Ohio) | 544.11 mi (875.66 km) |
| Middlesex to Monmouth (Oregon) | 2,454.03 mi (3,949.37 km) |
| Middlesex to Monroe (Georgia) | 689.50 mi (1,109.65 km) |
| Middlesex to Monroe (Louisiana) | 1,120.19 mi (1,802.78 km) |
| Middlesex to Monroe (Michigan) | 470.50 mi (757.20 km) |
| Middlesex to Monroe (North Carolina) | 507.11 mi (816.11 km) |
| Middlesex to Monroe (Ohio) | 527.59 mi (849.08 km) |
