| Barreiro to Ponteland | 1,181.93 mi (1,902.13 km) |
| Barreiro to Pontneddfechan | 942.17 mi (1,516.27 km) |
| Barreiro to Pontypridd | 935.56 mi (1,505.63 km) |
| Barreiro to Poole | 901.33 mi (1,450.55 km) |
| Barreiro to Port Glasgow | 1,209.94 mi (1,947.22 km) |
| Barreiro to Port Talbot | 928.53 mi (1,494.32 km) |
| Barreiro to Portchester | 925.91 mi (1,490.11 km) |
| Barreiro to Porthcawl | 922.73 mi (1,484.99 km) |
| Barreiro to Portishead | 936.61 mi (1,507.33 km) |
| Barreiro to Portlethen | 1,309.35 mi (2,107.19 km) |
| Barreiro to Portsmouth | 924.37 mi (1,487.63 km) |
| Barreiro to Potters Bar | 997.19 mi (1,604.83 km) |
| Barreiro to Poulton le Fylde | 1,087.24 mi (1,749.74 km) |
| Barreiro to Poynton | 1,066.69 mi (1,716.68 km) |
| Barreiro to Prescot | 1,062.20 mi (1,709.44 km) |
