| Port Huron to Melzo | 4,282.90 mi (6,892.65 km) |
| Port Huron to Mendicino | 4,817.84 mi (7,753.57 km) |
| Port Huron to Menfi | 4,754.42 mi (7,651.49 km) |
| Port Huron to Mentana | 4,554.11 mi (7,329.14 km) |
| Port Huron to Merano | 4,306.40 mi (6,930.48 km) |
| Port Huron to Merate | 4,275.82 mi (6,881.27 km) |
| Port Huron to Mercato San Severino | 4,693.02 mi (7,552.69 km) |
| Port Huron to Mercogliano | 4,686.04 mi (7,541.45 km) |
| Port Huron to Mesagne | 4,825.68 mi (7,766.18 km) |
| Port Huron to Messina | 4,838.29 mi (7,786.47 km) |
| Port Huron to Mestre | 4,395.47 mi (7,073.82 km) |
| Port Huron to Mestrino | 4,378.48 mi (7,046.48 km) |
| Port Huron to Milan | 4,275.07 mi (6,880.07 km) |
| Port Huron to Milazzo | 4,823.97 mi (7,763.43 km) |
| Port Huron to Minerbio | 4,400.05 mi (7,081.19 km) |
