| Merthyr Tudful to Payson (Arizona) | 5,077.65 mi (8,171.69 km) |
| Merthyr Tudful to Payson (Utah) | 4,778.41 mi (7,690.11 km) |
| Merthyr Tudful to Peabody (Massachusetts) | 3,122.36 mi (5,024.96 km) |
| Merthyr Tudful to Peachtree City (Georgia) | 4,093.54 mi (6,587.92 km) |
| Merthyr Tudful to Peachtree Corners (Georgia) | 4,051.91 mi (6,520.93 km) |
| Merthyr Tudful to Pearl (Mississippi) | 4,373.72 mi (7,038.82 km) |
| Merthyr Tudful to Pearl City (Hawaii) | 7,153.88 mi (11,513.05 km) |
| Merthyr Tudful to Pearl River (New York) | 3,308.26 mi (5,324.13 km) |
| Merthyr Tudful to Pearland (Texas) | 4,721.85 mi (7,599.08 km) |
| Merthyr Tudful to Pebble Creek (Florida) | 4,258.63 mi (6,853.61 km) |
| Merthyr Tudful to Pecan Grove (Texas) | 4,734.91 mi (7,620.11 km) |
| Merthyr Tudful to Pecos (Texas) | 4,945.55 mi (7,959.09 km) |
| Merthyr Tudful to Peekskill (New York) | 3,295.25 mi (5,303.20 km) |
| Merthyr Tudful to Pekin (Illinois) | 3,953.28 mi (6,362.18 km) |
| Merthyr Tudful to Pelham (Alabama) | 4,187.04 mi (6,738.39 km) |
