| Cities | Distance |
|---|---|
| Porsgrunn to Mouscron | 633.25 mi (1,019.12 km) |
| Porsgrunn to Namur | 627.55 mi (1,009.94 km) |
| Porsgrunn to Neder-Over-Heembeek | 605.14 mi (973.88 km) |
| Porsgrunn to Neerpelt | 569.87 mi (917.11 km) |
| Porsgrunn to Nevele | 608.67 mi (979.56 km) |
| Porsgrunn to Niel | 591.64 mi (952.15 km) |
| Porsgrunn to Nieuwpoort | 616.56 mi (992.25 km) |
| Porsgrunn to Nijlen | 584.03 mi (939.90 km) |
| Porsgrunn to Ninove | 614.64 mi (989.17 km) |
| Porsgrunn to Nivelles | 626.85 mi (1,008.82 km) |
| Porsgrunn to Olen | 582.51 mi (937.46 km) |
| Porsgrunn to Oostakker | 601.02 mi (967.24 km) |
| Porsgrunn to Oosterzele | 610.23 mi (982.07 km) |
| Porsgrunn to Oostkamp | 605.94 mi (975.17 km) |
| Porsgrunn to Opglabbeek | 580.41 mi (934.08 km) |