| Kasterlee to Novi di Modena | 517.67 mi (833.10 km) |
| Kasterlee to Novi Ligure | 482.08 mi (775.83 km) |
| Kasterlee to Nuoro | 784.02 mi (1,261.76 km) |
| Kasterlee to Occhiobello | 533.25 mi (858.18 km) |
| Kasterlee to Oderzo | 511.31 mi (822.88 km) |
| Kasterlee to Oggiono | 427.85 mi (688.57 km) |
| Kasterlee to Olbia | 746.14 mi (1,200.80 km) |
| Kasterlee to Oleggio | 425.20 mi (684.30 km) |
| Kasterlee to Olgiate Comasco | 419.92 mi (675.79 km) |
| Kasterlee to Olgiate Olona | 427.75 mi (688.40 km) |
| Kasterlee to Omegna | 403.30 mi (649.05 km) |
| Kasterlee to Opera | 450.08 mi (724.33 km) |
| Kasterlee to Oppeano | 500.77 mi (805.92 km) |
| Kasterlee to Orbassano | 447.45 mi (720.10 km) |
| Kasterlee to Orbetello | 676.28 mi (1,088.38 km) |
