| Merthyr Tudful to Plattsburgh (New York) | 3,136.22 mi (5,047.26 km) |
| Merthyr Tudful to Pleasant Grove (Utah) | 4,760.44 mi (7,661.18 km) |
| Merthyr Tudful to Pleasant Hill (California) | 5,224.24 mi (8,407.59 km) |
| Merthyr Tudful to Pleasant Hill (Iowa) | 4,052.35 mi (6,521.63 km) |
| Merthyr Tudful to Pleasant Prairie (Wisconsin) | 3,796.08 mi (6,109.19 km) |
| Merthyr Tudful to Pleasant View (Utah) | 4,717.89 mi (7,592.71 km) |
| Merthyr Tudful to Pleasanton (California) | 5,234.70 mi (8,424.44 km) |
| Merthyr Tudful to Pleasanton (Texas) | 4,878.92 mi (7,851.86 km) |
| Merthyr Tudful to Pleasantville (New Jersey) | 3,401.54 mi (5,474.25 km) |
| Merthyr Tudful to Plover (Wisconsin) | 3,770.94 mi (6,068.74 km) |
| Merthyr Tudful to Plum (Pennsylvania) | 3,566.29 mi (5,739.38 km) |
| Merthyr Tudful to Plymouth (Indiana) | 3,788.97 mi (6,097.76 km) |
| Merthyr Tudful to Plymouth (Minnesota) | 3,890.03 mi (6,260.40 km) |
| Merthyr Tudful to Pocatello (Idaho) | 4,650.15 mi (7,483.70 km) |
| Merthyr Tudful to Poinciana (Florida) | 4,224.28 mi (6,798.33 km) |
