| Hillegom to Orzesze | 629.46 mi (1,013.02 km) |
| Hillegom to Osowa | 590.46 mi (950.26 km) |
| Hillegom to Ostroda | 645.92 mi (1,039.50 km) |
| Hillegom to Ostroleka | 711.87 mi (1,145.65 km) |
| Hillegom to Ostrow Mazowiecka | 726.79 mi (1,169.65 km) |
| Hillegom to Ostrow Wielkopolski | 564.24 mi (908.06 km) |
| Hillegom to Ostrowiec Swietokrzyski | 725.92 mi (1,168.25 km) |
| Hillegom to Ostrzeszow | 572.10 mi (920.70 km) |
| Hillegom to Oswiecim | 651.74 mi (1,048.87 km) |
| Hillegom to Otwock | 705.04 mi (1,134.64 km) |
| Hillegom to Ozarow Mazowiecki | 684.55 mi (1,101.67 km) |
| Hillegom to Ozimek | 596.04 mi (959.23 km) |
| Hillegom to Ozorkow | 622.87 mi (1,002.42 km) |
| Hillegom to Pabianice | 630.45 mi (1,014.60 km) |
| Hillegom to Parczew | 777.68 mi (1,251.56 km) |
