| Cities | Distance |
|---|---|
| Porsgrunn to Nuth | 586.18 mi (943.36 km) |
| Porsgrunn to Oegstgeest | 520.39 mi (837.49 km) |
| Porsgrunn to Oirschot | 553.73 mi (891.14 km) |
| Porsgrunn to Oisterwijk | 549.45 mi (884.26 km) |
| Porsgrunn to Oldebroek | 483.56 mi (778.21 km) |
| Porsgrunn to Oldenzaal | 481.92 mi (775.58 km) |
| Porsgrunn to Ommen | 473.38 mi (761.83 km) |
| Porsgrunn to Oosterend | 444.91 mi (716.01 km) |
| Porsgrunn to Oosterhout | 549.97 mi (885.09 km) |
| Porsgrunn to Oosterwolde | 443.15 mi (713.18 km) |
| Porsgrunn to Oostzaan | 498.04 mi (801.51 km) |
| Porsgrunn to Opmeer | 479.79 mi (772.14 km) |
| Porsgrunn to Oss | 533.43 mi (858.48 km) |
| Porsgrunn to Oud-Beijerland | 545.10 mi (877.25 km) |
| Porsgrunn to Oudenbosch | 558.10 mi (898.17 km) |