| Cwmbran to Mendota Heights (Minnesota) | 3,901.10 mi (6,278.21 km) |
| Cwmbran to Menifee (California) | 5,325.14 mi (8,569.99 km) |
| Cwmbran to Menlo Park (California) | 5,270.10 mi (8,481.41 km) |
| Cwmbran to Menomonee Falls (Wisconsin) | 3,793.22 mi (6,104.59 km) |
| Cwmbran to Menomonie (Wisconsin) | 3,855.69 mi (6,205.14 km) |
| Cwmbran to Mentor (Ohio) | 3,593.95 mi (5,783.91 km) |
| Cwmbran to Mequon (Wisconsin) | 3,784.02 mi (6,089.79 km) |
| Cwmbran to Merced (California) | 5,227.18 mi (8,412.33 km) |
| Cwmbran to Mercedes (Texas) | 5,019.68 mi (8,078.39 km) |
| Cwmbran to Mercer Island (Washington) | 4,698.65 mi (7,561.75 km) |
| Cwmbran to Mercerville (New Jersey) | 3,388.33 mi (5,453.00 km) |
| Cwmbran to Meriden (Connecticut) | 3,254.90 mi (5,238.26 km) |
| Cwmbran to Meridian (Idaho) | 4,748.93 mi (7,642.67 km) |
| Cwmbran to Meridian (Mississippi) | 4,327.81 mi (6,964.94 km) |
| Cwmbran to Merriam (Kansas) | 4,237.84 mi (6,820.15 km) |
