| Abertawe to Mauldin (South Carolina) | 3,912.39 mi (6,296.39 km) |
| Abertawe to Maumee (Ohio) | 3,655.69 mi (5,883.26 km) |
| Abertawe to Maumelle (Arkansas) | 4,318.38 mi (6,949.77 km) |
| Abertawe to Mayagüez (Puerto Rico) | 4,095.67 mi (6,591.34 km) |
| Abertawe to Mayfield Heights (Ohio) | 3,570.06 mi (5,745.45 km) |
| Abertawe to Mays Chapel (Maryland) | 3,466.42 mi (5,578.66 km) |
| Abertawe to Maywood (California) | 5,312.44 mi (8,549.55 km) |
| Abertawe to Maywood (Illinois) | 3,805.51 mi (6,124.37 km) |
| Abertawe to McAlester (Oklahoma) | 4,447.44 mi (7,157.46 km) |
| Abertawe to McAllen (Texas) | 4,992.83 mi (8,035.18 km) |
| Abertawe to McCalla (Alabama) | 4,177.91 mi (6,723.70 km) |
| Abertawe to McComb (Mississippi) | 4,420.11 mi (7,113.48 km) |
| Abertawe to McDonough (Georgia) | 4,052.86 mi (6,522.45 km) |
| Abertawe to McFarland (California) | 5,252.00 mi (8,452.27 km) |
| Abertawe to McHenry (Illinois) | 3,802.00 mi (6,118.73 km) |
