| Port Huron to Marasesti | 4,937.21 mi (7,945.68 km) |
| Port Huron to Marghita | 4,696.38 mi (7,558.09 km) |
| Port Huron to Marginea | 4,797.92 mi (7,721.50 km) |
| Port Huron to Matca | 4,949.23 mi (7,965.01 km) |
| Port Huron to Medgidia | 5,051.53 mi (8,129.66 km) |
| Port Huron to Media | 4,822.82 mi (7,761.58 km) |
| Port Huron to Miercurea-Ciuc | 4,864.57 mi (7,828.77 km) |
| Port Huron to Mioveni | 4,899.25 mi (7,884.58 km) |
| Port Huron to Mizil | 4,951.04 mi (7,967.93 km) |
| Port Huron to Moinesti | 4,885.00 mi (7,861.64 km) |
| Port Huron to Moisei | 4,760.41 mi (7,661.14 km) |
| Port Huron to Moldova Noua | 4,790.01 mi (7,708.77 km) |
| Port Huron to Moreni | 4,923.50 mi (7,923.61 km) |
| Port Huron to Motru | 4,834.49 mi (7,780.37 km) |
| Port Huron to Murfatlar | 5,060.44 mi (8,143.99 km) |
