| Porsgrunn to Plombieres | 597.85 mi (962.15 km) |
| Porsgrunn to Pont-a-Celles | 631.89 mi (1,016.93 km) |
| Porsgrunn to Poperinge | 633.60 mi (1,019.67 km) |
| Porsgrunn to Profondeville | 633.48 mi (1,019.48 km) |
| Porsgrunn to Putte | 591.93 mi (952.61 km) |
| Porsgrunn to Puurs | 595.04 mi (957.62 km) |
| Porsgrunn to Quaregnon | 642.91 mi (1,034.67 km) |
| Porsgrunn to Raeren | 599.63 mi (965.01 km) |
| Porsgrunn to Ranst | 583.19 mi (938.55 km) |
| Porsgrunn to Ravels | 566.29 mi (911.35 km) |
| Porsgrunn to Retie | 572.05 mi (920.63 km) |
| Porsgrunn to Riemst | 596.34 mi (959.72 km) |
| Porsgrunn to Rijkevorsel | 570.43 mi (918.01 km) |
| Porsgrunn to Rixensart | 615.20 mi (990.06 km) |
| Porsgrunn to Rochefort | 643.52 mi (1,035.64 km) |
