| Barreiro to Peterborough | 1,049.05 mi (1,688.29 km) |
| Barreiro to Peterhead | 1,342.75 mi (2,160.95 km) |
| Barreiro to Peterlee | 1,169.08 mi (1,881.45 km) |
| Barreiro to Petersfield | 939.51 mi (1,512.00 km) |
| Barreiro to Pinner | 986.59 mi (1,587.77 km) |
| Barreiro to Pitsea | 1,004.23 mi (1,616.15 km) |
| Barreiro to Plumstead | 990.46 mi (1,594.00 km) |
| Barreiro to Plymouth | 843.84 mi (1,358.02 km) |
| Barreiro to Plympton | 846.08 mi (1,361.63 km) |
| Barreiro to Plymstock | 843.62 mi (1,357.68 km) |
| Barreiro to Polegate | 954.33 mi (1,535.85 km) |
| Barreiro to Ponders End | 996.92 mi (1,604.39 km) |
| Barreiro to Pont-y-pwl | 946.50 mi (1,523.24 km) |
| Barreiro to Pontardulais | 933.28 mi (1,501.97 km) |
| Barreiro to Pontefract | 1,100.80 mi (1,771.57 km) |
