| Porsgrunn to Ponteland | 512.82 mi (825.30 km) |
| Porsgrunn to Pontneddfechan | 725.79 mi (1,168.04 km) |
| Porsgrunn to Pontypridd | 727.17 mi (1,170.26 km) |
| Porsgrunn to Poole | 741.06 mi (1,192.62 km) |
| Porsgrunn to Port Glasgow | 576.24 mi (927.37 km) |
| Porsgrunn to Port Talbot | 740.31 mi (1,191.42 km) |
| Porsgrunn to Portchester | 713.12 mi (1,147.66 km) |
| Porsgrunn to Porthcawl | 743.18 mi (1,196.04 km) |
| Porsgrunn to Portishead | 717.98 mi (1,155.48 km) |
| Porsgrunn to Portlethen | 454.42 mi (731.32 km) |
| Porsgrunn to Portsmouth | 714.46 mi (1,149.81 km) |
| Porsgrunn to Potters Bar | 641.46 mi (1,032.34 km) |
| Porsgrunn to Poulton le Fylde | 604.59 mi (972.99 km) |
| Porsgrunn to Poynton | 602.60 mi (969.80 km) |
| Porsgrunn to Prescot | 618.77 mi (995.81 km) |
