| Holyhead to Monroe (Washington) | 4,544.29 mi (7,313.33 km) |
| Holyhead to Monroe (Wisconsin) | 3,763.71 mi (6,057.10 km) |
| Holyhead to Monroeville (Pennsylvania) | 3,485.86 mi (5,609.96 km) |
| Holyhead to Monrovia (California) | 5,200.54 mi (8,369.46 km) |
| Holyhead to Monsey (New York) | 3,228.74 mi (5,196.15 km) |
| Holyhead to Montclair (California) | 5,196.31 mi (8,362.65 km) |
| Holyhead to Montclair (Virginia) | 3,473.29 mi (5,589.72 km) |
| Holyhead to Montebello (California) | 5,212.90 mi (8,389.35 km) |
| Holyhead to Monterey (California) | 5,183.87 mi (8,342.63 km) |
| Holyhead to Monterey Park (California) | 5,211.66 mi (8,387.35 km) |
| Holyhead to Montgomery (Alabama) | 4,134.18 mi (6,653.32 km) |
| Holyhead to Montgomery (Illinois) | 3,757.44 mi (6,047.01 km) |
| Holyhead to Montgomery (Ohio) | 3,720.32 mi (5,987.28 km) |
| Holyhead to Montgomery Village (Maryland) | 3,441.29 mi (5,538.23 km) |
| Holyhead to Montgomeryville (Pennsylvania) | 3,314.36 mi (5,333.95 km) |
