| Port Huron to Miranda de Ebro | 3,864.63 mi (6,219.52 km) |
| Port Huron to Mislata | 4,091.47 mi (6,584.59 km) |
| Port Huron to Moana | 3,617.71 mi (5,822.15 km) |
| Port Huron to Moguer | 3,876.47 mi (6,238.57 km) |
| Port Huron to Molina de Segura | 4,108.35 mi (6,611.76 km) |
| Port Huron to Molins de Rey | 4,127.27 mi (6,642.20 km) |
| Port Huron to Mollerusa | 4,070.25 mi (6,550.44 km) |
| Port Huron to Mollet | 4,131.25 mi (6,648.61 km) |
| Port Huron to Moncada | 4,132.08 mi (6,649.93 km) |
| Port Huron to Moncada | 4,089.75 mi (6,581.82 km) |
| Port Huron to Monforte de Lemos | 3,665.96 mi (5,899.79 km) |
| Port Huron to Monforte del Cid | 4,118.17 mi (6,627.55 km) |
| Port Huron to Mongat | 4,136.79 mi (6,657.53 km) |
| Port Huron to Monovar | 4,111.10 mi (6,616.18 km) |
| Port Huron to Monserrat | 4,087.39 mi (6,578.02 km) |
