| Opwijk to Kalisz | 601.09 mi (967.36 km) |
| Opwijk to Kamien Pomorski | 491.01 mi (790.20 km) |
| Opwijk to Kamienna Gora | 516.25 mi (830.82 km) |
| Opwijk to Karczew | 735.98 mi (1,184.45 km) |
| Opwijk to Kartuzy | 630.57 mi (1,014.81 km) |
| Opwijk to Katowice | 650.99 mi (1,047.66 km) |
| Opwijk to Kedzierzyn-Kozle | 614.49 mi (988.93 km) |
| Opwijk to Kepno | 597.95 mi (962.31 km) |
| Opwijk to Ketrzyn | 752.26 mi (1,210.65 km) |
| Opwijk to Kety | 664.55 mi (1,069.49 km) |
| Opwijk to Kielce | 715.04 mi (1,150.75 km) |
| Opwijk to Kielczow | 563.79 mi (907.33 km) |
| Opwijk to Klobuck | 641.10 mi (1,031.75 km) |
| Opwijk to Klodzko | 546.16 mi (878.96 km) |
| Opwijk to Kluczbork | 609.60 mi (981.06 km) |
