| Ostrow Mazowiecka to Juprelle | 712.95 mi (1,147.38 km) |
| Ostrow Mazowiecka to Jurbise | 783.52 mi (1,260.96 km) |
| Ostrow Mazowiecka to Kalmthout | 744.63 mi (1,198.36 km) |
| Ostrow Mazowiecka to Kampenhout | 749.33 mi (1,205.92 km) |
| Ostrow Mazowiecka to Kapelle-op-den-Bos | 755.49 mi (1,215.84 km) |
| Ostrow Mazowiecka to Kapellen | 747.18 mi (1,202.47 km) |
| Ostrow Mazowiecka to Kasterlee | 726.78 mi (1,169.65 km) |
| Ostrow Mazowiecka to Keerbergen | 744.71 mi (1,198.50 km) |
| Ostrow Mazowiecka to Kinrooi | 695.73 mi (1,119.66 km) |
| Ostrow Mazowiecka to Knokke-Heist | 794.63 mi (1,278.84 km) |
| Ostrow Mazowiecka to Koekelare | 811.97 mi (1,306.74 km) |
| Ostrow Mazowiecka to Koekelberg | 759.84 mi (1,222.84 km) |
| Ostrow Mazowiecka to Koksijde | 825.59 mi (1,328.67 km) |
| Ostrow Mazowiecka to Kontich | 749.80 mi (1,206.68 km) |
| Ostrow Mazowiecka to Kortemark | 810.47 mi (1,304.32 km) |
