| Knokke-Heist to Orzesze | 679.75 mi (1,093.94 km) |
| Knokke-Heist to Osowa | 666.43 mi (1,072.51 km) |
| Knokke-Heist to Ostroda | 718.11 mi (1,155.69 km) |
| Knokke-Heist to Ostroleka | 780.96 mi (1,256.83 km) |
| Knokke-Heist to Ostrow Mazowiecka | 794.63 mi (1,278.84 km) |
| Knokke-Heist to Ostrow Wielkopolski | 624.33 mi (1,004.76 km) |
| Knokke-Heist to Ostrowiec Swietokrzyski | 783.77 mi (1,261.35 km) |
| Knokke-Heist to Ostrzeszow | 630.60 mi (1,014.86 km) |
| Knokke-Heist to Oswiecim | 701.85 mi (1,129.52 km) |
| Knokke-Heist to Otwock | 769.33 mi (1,238.11 km) |
| Knokke-Heist to Ozarow Mazowiecki | 749.24 mi (1,205.79 km) |
| Knokke-Heist to Ozimek | 649.43 mi (1,045.16 km) |
| Knokke-Heist to Ozorkow | 685.67 mi (1,103.48 km) |
| Knokke-Heist to Pabianice | 691.32 mi (1,112.58 km) |
| Knokke-Heist to Parczew | 840.11 mi (1,352.03 km) |
