| Port Huron to Massarosa | 4,384.11 mi (7,055.55 km) |
| Port Huron to Matelica | 4,517.29 mi (7,269.87 km) |
| Port Huron to Matera | 4,772.80 mi (7,681.08 km) |
| Port Huron to Matino | 4,862.85 mi (7,825.99 km) |
| Port Huron to Mazzarino | 4,820.32 mi (7,757.55 km) |
| Port Huron to Meda | 4,266.43 mi (6,866.16 km) |
| Port Huron to Medesano | 4,341.01 mi (6,986.17 km) |
| Port Huron to Medicina | 4,411.91 mi (7,100.29 km) |
| Port Huron to Meldola | 4,442.77 mi (7,149.95 km) |
| Port Huron to Melegnano | 4,284.63 mi (6,895.45 km) |
| Port Huron to Melendugno | 4,860.49 mi (7,822.20 km) |
| Port Huron to Melfi | 4,719.72 mi (7,595.66 km) |
| Port Huron to Melilli | 4,864.37 mi (7,828.45 km) |
| Port Huron to Melito di Napoli | 4,665.43 mi (7,508.28 km) |
| Port Huron to Melito di Porto Salvo | 4,860.09 mi (7,821.56 km) |
