| Cities | Distance |
|---|---|
| Porsgrunn to Haram | 272.30 mi (438.22 km) |
| Porsgrunn to Harstad | 699.55 mi (1,125.82 km) |
| Porsgrunn to Haugesund | 157.35 mi (253.23 km) |
| Porsgrunn to Helleland | 142.30 mi (229.02 km) |
| Porsgrunn to Heum | 14.05 mi (22.61 km) |
| Porsgrunn to Honefoss | 75.49 mi (121.49 km) |
| Porsgrunn to Horten | 33.11 mi (53.28 km) |
| Porsgrunn to Kaldsletta | 778.60 mi (1,253.03 km) |
| Porsgrunn to Kirkenes | 942.15 mi (1,516.24 km) |
| Porsgrunn to Kleppe | 148.43 mi (238.88 km) |
| Porsgrunn to Kongsberg | 38.32 mi (61.67 km) |
| Porsgrunn to Kongsvinger | 109.05 mi (175.49 km) |
| Porsgrunn to Kopervik | 156.36 mi (251.63 km) |
| Porsgrunn to Kosvik | 89.12 mi (143.43 km) |
| Porsgrunn to Kragero | 20.41 mi (32.85 km) |