| Cities | Distance |
|---|---|
| Porsgrunn to Niederzier | 582.98 mi (938.21 km) |
| Porsgrunn to Niefern-Oschelbronn | 705.68 mi (1,135.68 km) |
| Porsgrunn to Nierstein | 641.18 mi (1,031.89 km) |
| Porsgrunn to Niesky | 575.91 mi (926.83 km) |
| Porsgrunn to Nittenau | 692.74 mi (1,114.85 km) |
| Porsgrunn to Nittendorf | 702.99 mi (1,131.35 km) |
| Porsgrunn to Nohfelden | 666.32 mi (1,072.34 km) |
| Porsgrunn to Norden | 393.11 mi (632.66 km) |
| Porsgrunn to Nordenham | 390.90 mi (629.09 km) |
| Porsgrunn to Norderstedt | 373.91 mi (601.76 km) |
| Porsgrunn to Nordhausen | 527.54 mi (848.99 km) |
| Porsgrunn to Nordhorn | 472.98 mi (761.19 km) |
| Porsgrunn to Nordkirchen | 516.81 mi (831.72 km) |
| Porsgrunn to Nordlingen | 709.90 mi (1,142.47 km) |
| Porsgrunn to Nordstemmen | 480.56 mi (773.39 km) |