| Port Huron to Mombris | 4,101.49 mi (6,600.70 km) |
| Port Huron to Monchengladbach | 3,958.52 mi (6,370.62 km) |
| Port Huron to Monschau | 3,973.77 mi (6,395.16 km) |
| Port Huron to Montabaur | 4,037.56 mi (6,497.83 km) |
| Port Huron to Moosburg | 4,266.27 mi (6,865.89 km) |
| Port Huron to Morbach | 4,032.55 mi (6,489.76 km) |
| Port Huron to Morfelden-Walldorf | 4,081.86 mi (6,569.12 km) |
| Port Huron to Morlenbach | 4,102.23 mi (6,601.90 km) |
| Port Huron to Morsbach | 4,018.31 mi (6,466.85 km) |
| Port Huron to Mosbach | 4,126.86 mi (6,641.55 km) |
| Port Huron to Mosigkau | 4,149.27 mi (6,677.61 km) |
| Port Huron to Mossingen | 4,158.41 mi (6,692.31 km) |
| Port Huron to Much | 4,004.66 mi (6,444.88 km) |
| Port Huron to Mucheln | 4,153.52 mi (6,684.45 km) |
| Port Huron to Muhlacker | 4,129.90 mi (6,646.43 km) |
