| Heswall to Mauldin (South Carolina) | 3,915.69 mi (6,301.69 km) |
| Heswall to Maumee (Ohio) | 3,643.92 mi (5,864.32 km) |
| Heswall to Maumelle (Arkansas) | 4,306.80 mi (6,931.13 km) |
| Heswall to Mayagüez (Puerto Rico) | 4,150.78 mi (6,680.03 km) |
| Heswall to Mayfield Heights (Ohio) | 3,561.34 mi (5,731.42 km) |
| Heswall to Mays Chapel (Maryland) | 3,468.68 mi (5,582.31 km) |
| Heswall to Maywood (California) | 5,265.43 mi (8,473.90 km) |
| Heswall to Maywood (Illinois) | 3,787.63 mi (6,095.59 km) |
| Heswall to McAlester (Oklahoma) | 4,430.88 mi (7,130.82 km) |
| Heswall to McAllen (Texas) | 4,985.76 mi (8,023.80 km) |
| Heswall to McCalla (Alabama) | 4,176.83 mi (6,721.95 km) |
| Heswall to McComb (Mississippi) | 4,417.31 mi (7,108.98 km) |
| Heswall to McDonough (Georgia) | 4,055.84 mi (6,527.24 km) |
| Heswall to McFarland (California) | 5,201.58 mi (8,371.13 km) |
| Heswall to McHenry (Illinois) | 3,782.66 mi (6,087.60 km) |
