| Merthyr Tudful to Oswestry | 78.37 mi (126.12 km) |
| Merthyr Tudful to Otley | 165.21 mi (265.88 km) |
| Merthyr Tudful to Ovenden | 151.77 mi (244.25 km) |
| Merthyr Tudful to Oxford | 90.70 mi (145.96 km) |
| Merthyr Tudful to Oxted | 148.86 mi (239.56 km) |
| Merthyr Tudful to Padbury | 104.71 mi (168.52 km) |
| Merthyr Tudful to Padiham | 148.76 mi (239.40 km) |
| Merthyr Tudful to Paignton | 90.71 mi (145.98 km) |
| Merthyr Tudful to Paisley | 286.65 mi (461.32 km) |
| Merthyr Tudful to Palmers Green | 140.29 mi (225.78 km) |
| Merthyr Tudful to Parkstone | 94.40 mi (151.92 km) |
| Merthyr Tudful to Partick | 287.67 mi (462.96 km) |
| Merthyr Tudful to Patcham | 152.07 mi (244.74 km) |
| Merthyr Tudful to Peebles | 270.19 mi (434.83 km) |
| Merthyr Tudful to Pelsall | 85.50 mi (137.61 km) |
