| Ostend to Knurow | 691.72 mi (1,113.22 km) |
| Ostend to Kobylka | 783.07 mi (1,260.23 km) |
| Ostend to Kokoszki | 683.93 mi (1,100.68 km) |
| Ostend to Kolbuszowa | 824.61 mi (1,327.08 km) |
| Ostend to Kolno | 814.58 mi (1,310.94 km) |
| Ostend to Kolo | 674.73 mi (1,085.88 km) |
| Ostend to Kolobrzeg | 566.80 mi (912.18 km) |
| Ostend to Koluszki | 725.53 mi (1,167.63 km) |
| Ostend to Komorniki | 592.97 mi (954.29 km) |
| Ostend to Konin | 659.21 mi (1,060.89 km) |
| Ostend to Konskie | 755.53 mi (1,215.90 km) |
| Ostend to Konstancin-Jeziorna | 780.23 mi (1,255.65 km) |
| Ostend to Konstantynow Lodzki | 705.61 mi (1,135.57 km) |
| Ostend to Koronowo | 649.70 mi (1,045.59 km) |
| Ostend to Koscian | 590.65 mi (950.56 km) |
