| Pembroke Dock to Mauldin (South Carolina) | 3,869.81 mi (6,227.86 km) |
| Pembroke Dock to Maumee (Ohio) | 3,614.19 mi (5,816.48 km) |
| Pembroke Dock to Maumelle (Arkansas) | 4,276.83 mi (6,882.89 km) |
| Pembroke Dock to Mayagüez (Puerto Rico) | 4,054.54 mi (6,525.15 km) |
| Pembroke Dock to Mayfield Heights (Ohio) | 3,528.30 mi (5,678.25 km) |
| Pembroke Dock to Mays Chapel (Maryland) | 3,423.91 mi (5,510.25 km) |
| Pembroke Dock to Maywood (California) | 5,275.83 mi (8,490.63 km) |
| Pembroke Dock to Maywood (Illinois) | 3,764.61 mi (6,058.56 km) |
| Pembroke Dock to McAlester (Oklahoma) | 4,406.36 mi (7,091.35 km) |
| Pembroke Dock to McAllen (Texas) | 4,950.86 mi (7,967.64 km) |
| Pembroke Dock to McCalla (Alabama) | 4,135.56 mi (6,655.55 km) |
| Pembroke Dock to McComb (Mississippi) | 4,377.86 mi (7,045.49 km) |
| Pembroke Dock to McDonough (Georgia) | 4,010.29 mi (6,453.94 km) |
| Pembroke Dock to McFarland (California) | 5,216.09 mi (8,394.48 km) |
| Pembroke Dock to McHenry (Illinois) | 3,761.28 mi (6,053.19 km) |
