| Porsgrunn to Knurow | 710.38 mi (1,143.24 km) |
| Porsgrunn to Kobylka | 645.98 mi (1,039.61 km) |
| Porsgrunn to Kokoszki | 467.26 mi (751.99 km) |
| Porsgrunn to Kolbuszowa | 776.75 mi (1,250.06 km) |
| Porsgrunn to Kolno | 611.08 mi (983.44 km) |
| Porsgrunn to Kolo | 589.94 mi (949.42 km) |
| Porsgrunn to Kolobrzeg | 407.26 mi (655.42 km) |
| Porsgrunn to Koluszki | 643.11 mi (1,034.99 km) |
| Porsgrunn to Komorniki | 545.27 mi (877.52 km) |
| Porsgrunn to Konin | 580.74 mi (934.62 km) |
| Porsgrunn to Konskie | 689.45 mi (1,109.57 km) |
| Porsgrunn to Konstancin-Jeziorna | 657.32 mi (1,057.85 km) |
| Porsgrunn to Konstantynow Lodzki | 632.18 mi (1,017.39 km) |
| Porsgrunn to Koronowo | 509.49 mi (819.94 km) |
| Porsgrunn to Koscian | 555.64 mi (894.21 km) |
