| Holyhead to Mombris | 630.87 mi (1,015.29 km) |
| Holyhead to Monchengladbach | 489.63 mi (787.98 km) |
| Holyhead to Monschau | 500.63 mi (805.68 km) |
| Holyhead to Montabaur | 566.38 mi (911.51 km) |
| Holyhead to Moosburg | 793.36 mi (1,276.79 km) |
| Holyhead to Morbach | 558.50 mi (898.81 km) |
| Holyhead to Morfelden-Walldorf | 609.78 mi (981.34 km) |
| Holyhead to Morlenbach | 628.88 mi (1,012.08 km) |
| Holyhead to Morsbach | 549.96 mi (885.08 km) |
| Holyhead to Mosbach | 653.29 mi (1,051.37 km) |
| Holyhead to Mosigkau | 713.85 mi (1,148.84 km) |
| Holyhead to Mossingen | 684.88 mi (1,102.21 km) |
| Holyhead to Much | 535.89 mi (862.43 km) |
| Holyhead to Mucheln | 706.33 mi (1,136.73 km) |
| Holyhead to Muhlacker | 655.81 mi (1,055.42 km) |
