| Abertawe to McKeesport (Pennsylvania) | 3,556.96 mi (5,724.38 km) |
| Abertawe to McKinleyville (California) | 5,101.98 mi (8,210.84 km) |
| Abertawe to McKinney (Texas) | 4,569.37 mi (7,353.68 km) |
| Abertawe to McLean (Virginia) | 3,510.43 mi (5,649.50 km) |
| Abertawe to McMinnville (Oregon) | 4,833.94 mi (7,779.48 km) |
| Abertawe to McMinnville (Tennessee) | 4,012.02 mi (6,456.72 km) |
| Abertawe to McNair (Virginia) | 3,519.04 mi (5,663.35 km) |
| Abertawe to McPherson (Kansas) | 4,347.98 mi (6,997.40 km) |
| Abertawe to Mead Valley (California) | 5,290.94 mi (8,514.95 km) |
| Abertawe to Meadow Woods (Florida) | 4,183.53 mi (6,732.74 km) |
| Abertawe to Meadowbrook (Virginia) | 3,589.77 mi (5,777.18 km) |
| Abertawe to Meadville (Pennsylvania) | 3,512.02 mi (5,652.05 km) |
| Abertawe to Mebane (North Carolina) | 3,725.94 mi (5,996.33 km) |
| Abertawe to Mechanicsville (Virginia) | 3,576.02 mi (5,755.05 km) |
| Abertawe to Medford (Massachusetts) | 3,111.32 mi (5,007.19 km) |
