| Opmeer to Kalisz | 558.68 mi (899.10 km) |
| Opmeer to Kamien Pomorski | 414.28 mi (666.73 km) |
| Opmeer to Kamienna Gora | 491.76 mi (791.41 km) |
| Opmeer to Karczew | 687.13 mi (1,105.83 km) |
| Opmeer to Kartuzy | 555.03 mi (893.23 km) |
| Opmeer to Katowice | 627.02 mi (1,009.09 km) |
| Opmeer to Kedzierzyn-Kozle | 591.31 mi (951.62 km) |
| Opmeer to Kepno | 562.27 mi (904.89 km) |
| Opmeer to Ketrzyn | 682.23 mi (1,097.94 km) |
| Opmeer to Kety | 644.71 mi (1,037.57 km) |
| Opmeer to Kielce | 680.64 mi (1,095.38 km) |
| Opmeer to Kielczow | 531.42 mi (855.24 km) |
| Opmeer to Klobuck | 608.90 mi (979.94 km) |
| Opmeer to Klodzko | 525.65 mi (845.95 km) |
| Opmeer to Kluczbork | 577.73 mi (929.77 km) |
