| Port Huron to Mattoon (Illinois) | 391.47 mi (630.00 km) |
| Port Huron to Mauldin (South Carolina) | 566.61 mi (911.87 km) |
| Port Huron to Maumee (Ohio) | 115.95 mi (186.60 km) |
| Port Huron to Maumelle (Arkansas) | 774.97 mi (1,247.20 km) |
| Port Huron to Mayagüez (Puerto Rico) | 1,931.79 mi (3,108.91 km) |
| Port Huron to Mayfield Heights (Ohio) | 113.05 mi (181.94 km) |
| Port Huron to Mays Chapel (Maryland) | 387.88 mi (624.24 km) |
| Port Huron to Maywood (California) | 2,013.50 mi (3,240.41 km) |
| Port Huron to Maywood (Illinois) | 285.93 mi (460.16 km) |
| Port Huron to McAlester (Oklahoma) | 905.41 mi (1,457.11 km) |
| Port Huron to McAllen (Texas) | 1,460.47 mi (2,350.39 km) |
| Port Huron to McCalla (Alabama) | 713.53 mi (1,148.31 km) |
| Port Huron to McComb (Mississippi) | 922.84 mi (1,485.17 km) |
| Port Huron to McDonough (Georgia) | 665.79 mi (1,071.48 km) |
| Port Huron to McFarland (California) | 2,013.21 mi (3,239.95 km) |
