| Holyhead to Manassas (Virginia) | 3,472.71 mi (5,588.78 km) |
| Holyhead to Manassas Park (Virginia) | 3,470.01 mi (5,584.44 km) |
| Holyhead to Manatí (Puerto Rico) | 4,049.26 mi (6,516.65 km) |
| Holyhead to Manchester (Missouri) | 3,989.76 mi (6,420.90 km) |
| Holyhead to Manchester (New Hampshire) | 3,043.04 mi (4,897.30 km) |
| Holyhead to Manchester (Tennessee) | 3,971.33 mi (6,391.24 km) |
| Holyhead to Manchester (Virginia) | 3,533.59 mi (5,686.77 km) |
| Holyhead to Mandan (North Dakota) | 3,958.85 mi (6,371.15 km) |
| Holyhead to Mandeville (Louisiana) | 4,386.98 mi (7,060.16 km) |
| Holyhead to Mango (Florida) | 4,195.80 mi (6,752.49 km) |
| Holyhead to Manhattan (Kansas) | 4,187.77 mi (6,739.56 km) |
| Holyhead to Manhattan (New York) | 3,239.49 mi (5,213.46 km) |
| Holyhead to Manhattan Beach (California) | 5,229.35 mi (8,415.82 km) |
| Holyhead to Manitowoc (Wisconsin) | 3,621.43 mi (5,828.13 km) |
| Holyhead to Mankato (Minnesota) | 3,847.88 mi (6,192.57 km) |
