| Pontypridd to Mendota Heights (Minnesota) | 3,891.24 mi (6,262.34 km) |
| Pontypridd to Menifee (California) | 5,316.61 mi (8,556.26 km) |
| Pontypridd to Menlo Park (California) | 5,262.72 mi (8,469.53 km) |
| Pontypridd to Menomonee Falls (Wisconsin) | 3,782.59 mi (6,087.49 km) |
| Pontypridd to Menomonie (Wisconsin) | 3,845.71 mi (6,189.07 km) |
| Pontypridd to Mentor (Ohio) | 3,582.48 mi (5,765.45 km) |
| Pontypridd to Mequon (Wisconsin) | 3,773.39 mi (6,072.68 km) |
| Pontypridd to Merced (California) | 5,219.54 mi (8,400.03 km) |
| Pontypridd to Mercedes (Texas) | 5,008.00 mi (8,059.59 km) |
| Pontypridd to Mercer Island (Washington) | 4,692.61 mi (7,552.03 km) |
| Pontypridd to Mercerville (New Jersey) | 3,376.10 mi (5,433.31 km) |
| Pontypridd to Meriden (Connecticut) | 3,242.70 mi (5,218.61 km) |
| Pontypridd to Meridian (Idaho) | 4,741.57 mi (7,630.81 km) |
| Pontypridd to Meridian (Mississippi) | 4,315.86 mi (6,945.71 km) |
| Pontypridd to Merriam (Kansas) | 4,227.28 mi (6,803.15 km) |
