| Niscemi to Novi di Modena | 564.82 mi (909.00 km) |
| Niscemi to Novi Ligure | 601.07 mi (967.33 km) |
| Niscemi to Nuoro | 349.11 mi (561.85 km) |
| Niscemi to Occhiobello | 556.37 mi (895.39 km) |
| Niscemi to Oderzo | 604.26 mi (972.46 km) |
| Niscemi to Oggiono | 650.60 mi (1,047.04 km) |
| Niscemi to Olbia | 369.23 mi (594.22 km) |
| Niscemi to Oleggio | 655.11 mi (1,054.31 km) |
| Niscemi to Olgiate Comasco | 658.74 mi (1,060.14 km) |
| Niscemi to Olgiate Olona | 651.39 mi (1,048.32 km) |
| Niscemi to Omegna | 677.21 mi (1,089.87 km) |
| Niscemi to Opera | 628.63 mi (1,011.68 km) |
| Niscemi to Oppeano | 587.02 mi (944.71 km) |
| Niscemi to Orbassano | 648.97 mi (1,044.41 km) |
| Niscemi to Orbetello | 402.28 mi (647.41 km) |
