| Zaventem to Novi di Modena | 509.63 mi (820.17 km) |
| Zaventem to Novi Ligure | 467.97 mi (753.13 km) |
| Zaventem to Nuoro | 766.62 mi (1,233.75 km) |
| Zaventem to Occhiobello | 527.01 mi (848.13 km) |
| Zaventem to Oderzo | 509.56 mi (820.06 km) |
| Zaventem to Oggiono | 417.50 mi (671.90 km) |
| Zaventem to Olbia | 729.48 mi (1,173.98 km) |
| Zaventem to Oleggio | 412.17 mi (663.32 km) |
| Zaventem to Olgiate Comasco | 408.34 mi (657.17 km) |
| Zaventem to Olgiate Olona | 415.58 mi (668.81 km) |
| Zaventem to Omegna | 390.11 mi (627.82 km) |
| Zaventem to Opera | 438.40 mi (705.54 km) |
| Zaventem to Oppeano | 494.45 mi (795.74 km) |
| Zaventem to Orbassano | 430.04 mi (692.08 km) |
| Zaventem to Orbetello | 664.70 mi (1,069.73 km) |
