| Mortsel to Novi di Modena | 525.16 mi (845.16 km) |
| Mortsel to Novi Ligure | 485.51 mi (781.35 km) |
| Mortsel to Nuoro | 785.09 mi (1,263.47 km) |
| Mortsel to Occhiobello | 541.86 mi (872.04 km) |
| Mortsel to Oderzo | 522.53 mi (840.93 km) |
| Mortsel to Oggiono | 433.81 mi (698.15 km) |
| Mortsel to Olbia | 747.76 mi (1,203.41 km) |
| Mortsel to Oleggio | 429.35 mi (690.97 km) |
| Mortsel to Olgiate Comasco | 425.06 mi (684.07 km) |
| Mortsel to Olgiate Olona | 432.50 mi (696.03 km) |
| Mortsel to Omegna | 407.33 mi (655.53 km) |
| Mortsel to Opera | 455.17 mi (732.52 km) |
| Mortsel to Oppeano | 509.32 mi (819.67 km) |
| Mortsel to Orbassano | 448.44 mi (721.69 km) |
| Mortsel to Orbetello | 681.52 mi (1,096.79 km) |
