| Port Huron to Manerbio | 4,316.79 mi (6,947.20 km) |
| Port Huron to Manfredonia | 4,703.13 mi (7,568.96 km) |
| Port Huron to Maniago | 4,387.09 mi (7,060.35 km) |
| Port Huron to Mantova | 4,351.36 mi (7,002.84 km) |
| Port Huron to Maranello | 4,379.13 mi (7,047.53 km) |
| Port Huron to Marano di Napoli | 4,664.09 mi (7,506.13 km) |
| Port Huron to Marano Vicentino | 4,355.35 mi (7,009.26 km) |
| Port Huron to Marcianise | 4,663.19 mi (7,504.68 km) |
| Port Huron to Marcon | 4,395.33 mi (7,073.60 km) |
| Port Huron to Mareno di Piave | 4,385.90 mi (7,058.42 km) |
| Port Huron to Margherita di Savoia | 4,724.08 mi (7,602.67 km) |
| Port Huron to Mariano Comense | 4,265.82 mi (6,865.17 km) |
| Port Huron to Marigliano | 4,673.61 mi (7,521.45 km) |
| Port Huron to Marino | 4,565.22 mi (7,347.01 km) |
| Port Huron to Marostica | 4,362.30 mi (7,020.45 km) |
