| Portchester to Perth | 395.21 mi (636.03 km) |
| Portchester to Peterborough | 124.99 mi (201.15 km) |
| Portchester to Peterhead | 461.43 mi (742.59 km) |
| Portchester to Peterlee | 270.85 mi (435.89 km) |
| Portchester to Petersfield | 13.72 mi (22.08 km) |
| Portchester to Pinner | 60.77 mi (97.81 km) |
| Portchester to Pitsea | 86.40 mi (139.05 km) |
| Portchester to Plumstead | 68.94 mi (110.95 km) |
| Portchester to Plymouth | 136.44 mi (219.58 km) |
| Portchester to Plympton | 132.30 mi (212.91 km) |
| Portchester to Plymstock | 134.49 mi (216.43 km) |
| Portchester to Polegate | 59.55 mi (95.83 km) |
| Portchester to Ponders End | 72.41 mi (116.54 km) |
| Portchester to Pont-y-pwl | 102.14 mi (164.38 km) |
| Portchester to Pontardulais | 139.72 mi (224.86 km) |
