| Zaventem to Orzesze | 628.56 mi (1,011.58 km) |
| Zaventem to Osowa | 634.59 mi (1,021.28 km) |
| Zaventem to Ostroda | 681.75 mi (1,097.18 km) |
| Zaventem to Ostroleka | 741.38 mi (1,193.13 km) |
| Zaventem to Ostrow Mazowiecka | 753.94 mi (1,213.35 km) |
| Zaventem to Ostrow Wielkopolski | 578.74 mi (931.39 km) |
| Zaventem to Ostrowiec Swietokrzyski | 736.13 mi (1,184.69 km) |
| Zaventem to Ostrzeszow | 583.99 mi (939.85 km) |
| Zaventem to Oswiecim | 650.52 mi (1,046.90 km) |
| Zaventem to Otwock | 725.94 mi (1,168.29 km) |
| Zaventem to Ozarow Mazowiecki | 706.23 mi (1,136.57 km) |
| Zaventem to Ozimek | 599.88 mi (965.41 km) |
| Zaventem to Ozorkow | 641.57 mi (1,032.51 km) |
| Zaventem to Pabianice | 645.90 mi (1,039.48 km) |
| Zaventem to Parczew | 795.17 mi (1,279.71 km) |
