| Port Talbot to Mauldin (South Carolina) | 3,919.13 mi (6,307.24 km) |
| Port Talbot to Maumee (Ohio) | 3,662.38 mi (5,894.03 km) |
| Port Talbot to Maumelle (Arkansas) | 4,325.08 mi (6,960.54 km) |
| Port Talbot to Mayagüez (Puerto Rico) | 4,101.78 mi (6,601.18 km) |
| Port Talbot to Mayfield Heights (Ohio) | 3,576.77 mi (5,756.25 km) |
| Port Talbot to Mays Chapel (Maryland) | 3,473.16 mi (5,589.51 km) |
| Port Talbot to Maywood (California) | 5,318.62 mi (8,559.49 km) |
| Port Talbot to Maywood (Illinois) | 3,812.15 mi (6,135.06 km) |
| Port Talbot to McAlester (Oklahoma) | 4,454.09 mi (7,168.17 km) |
| Port Talbot to McAllen (Texas) | 4,999.55 mi (8,046.00 km) |
| Port Talbot to McCalla (Alabama) | 4,184.65 mi (6,734.54 km) |
| Port Talbot to McComb (Mississippi) | 4,426.84 mi (7,124.32 km) |
| Port Talbot to McDonough (Georgia) | 4,059.60 mi (6,533.30 km) |
| Port Talbot to McFarland (California) | 5,258.09 mi (8,462.08 km) |
| Port Talbot to McHenry (Illinois) | 3,808.63 mi (6,129.40 km) |
