| Porsgrunn to Peterborough | 593.47 mi (955.09 km) |
| Porsgrunn to Peterhead | 431.04 mi (693.69 km) |
| Porsgrunn to Peterlee | 512.53 mi (824.84 km) |
| Porsgrunn to Petersfield | 699.42 mi (1,125.60 km) |
| Porsgrunn to Pinner | 652.37 mi (1,049.89 km) |
| Porsgrunn to Pitsea | 633.36 mi (1,019.30 km) |
| Porsgrunn to Plumstead | 647.30 mi (1,041.73 km) |
| Porsgrunn to Plymouth | 815.54 mi (1,312.48 km) |
| Porsgrunn to Plympton | 812.32 mi (1,307.30 km) |
| Porsgrunn to Plymstock | 814.96 mi (1,311.55 km) |
| Porsgrunn to Polegate | 683.65 mi (1,100.23 km) |
| Porsgrunn to Ponders End | 641.29 mi (1,032.06 km) |
| Porsgrunn to Pont-y-pwl | 713.59 mi (1,148.42 km) |
| Porsgrunn to Pontardulais | 740.78 mi (1,192.16 km) |
| Porsgrunn to Pontefract | 562.71 mi (905.59 km) |
