| Merthyr Tudful to Petite-Synthe | 252.01 mi (405.57 km) |
| Merthyr Tudful to Pfastatt | 549.36 mi (884.11 km) |
| Merthyr Tudful to Pia | 687.73 mi (1,106.79 km) |
| Merthyr Tudful to Pibrac | 601.58 mi (968.16 km) |
| Merthyr Tudful to Pierre-Benite | 559.58 mi (900.55 km) |
| Merthyr Tudful to Pierrefitte-sur-Seine | 317.40 mi (510.81 km) |
| Merthyr Tudful to Pierrelatte | 630.06 mi (1,013.98 km) |
| Merthyr Tudful to Pierrelaye | 307.52 mi (494.91 km) |
| Merthyr Tudful to Pithiviers | 351.25 mi (565.27 km) |
| Merthyr Tudful to Plabennec | 228.69 mi (368.05 km) |
| Merthyr Tudful to Plaisance-du-Touch | 605.12 mi (973.85 km) |
| Merthyr Tudful to Plaisir | 309.89 mi (498.71 km) |
| Merthyr Tudful to Plan-de-Cuques | 710.62 mi (1,143.63 km) |
| Merthyr Tudful to Plerin | 223.32 mi (359.39 km) |
| Merthyr Tudful to Ploemeur | 276.88 mi (445.60 km) |
