| Nigran to Orbetello | 1,020.98 mi (1,643.11 km) |
| Nigran to Oria | 1,371.11 mi (2,206.59 km) |
| Nigran to Oristano | 918.25 mi (1,477.78 km) |
| Nigran to Orta Nova | 1,260.96 mi (2,029.31 km) |
| Nigran to Orte | 1,080.36 mi (1,738.67 km) |
| Nigran to Ortona | 1,183.29 mi (1,904.33 km) |
| Nigran to Orvieto | 1,064.68 mi (1,713.44 km) |
| Nigran to Orzinuovi | 959.25 mi (1,543.77 km) |
| Nigran to Osimo | 1,130.12 mi (1,818.76 km) |
| Nigran to Ospitaletto | 967.32 mi (1,556.74 km) |
| Nigran to Ostuni | 1,364.89 mi (2,196.58 km) |
| Nigran to Ottaviano | 1,204.48 mi (1,938.43 km) |
| Nigran to Ovada | 891.25 mi (1,434.33 km) |
| Nigran to Ozieri | 928.04 mi (1,493.54 km) |
| Nigran to Paceco | 1,161.87 mi (1,869.85 km) |
