| Merthyr Tudful to Pemberton | 127.35 mi (204.95 km) |
| Merthyr Tudful to Pembroke Dock | 67.20 mi (108.14 km) |
| Merthyr Tudful to Pen-y-Bont ar Ogwr | 18.42 mi (29.65 km) |
| Merthyr Tudful to Penarth | 23.40 mi (37.65 km) |
| Merthyr Tudful to Pencoed | 16.16 mi (26.00 km) |
| Merthyr Tudful to Pendlebury | 129.80 mi (208.90 km) |
| Merthyr Tudful to Penicuik | 282.18 mi (454.13 km) |
| Merthyr Tudful to Penistone | 143.30 mi (230.62 km) |
| Merthyr Tudful to Penkridge | 86.34 mi (138.95 km) |
| Merthyr Tudful to Penrith | 203.52 mi (327.53 km) |
| Merthyr Tudful to Penwortham | 140.70 mi (226.43 km) |
| Merthyr Tudful to Penzance | 146.38 mi (235.57 km) |
| Merthyr Tudful to Perivale | 131.91 mi (212.29 km) |
| Merthyr Tudful to Perry Barr | 82.61 mi (132.95 km) |
| Merthyr Tudful to Perth | 321.49 mi (517.38 km) |
