| Ortahisar to Noventa Vicentina | 1,278.57 mi (2,057.66 km) |
| Ortahisar to Novi di Modena | 1,303.18 mi (2,097.27 km) |
| Ortahisar to Novi Ligure | 1,403.79 mi (2,259.19 km) |
| Ortahisar to Nuoro | 1,362.09 mi (2,192.07 km) |
| Ortahisar to Occhiobello | 1,270.94 mi (2,045.38 km) |
| Ortahisar to Oderzo | 1,241.96 mi (1,998.74 km) |
| Ortahisar to Oggiono | 1,389.18 mi (2,235.66 km) |
| Ortahisar to Olbia | 1,351.57 mi (2,175.14 km) |
| Ortahisar to Oleggio | 1,420.67 mi (2,286.35 km) |
| Ortahisar to Olgiate Comasco | 1,407.27 mi (2,264.78 km) |
| Ortahisar to Olgiate Olona | 1,409.22 mi (2,267.93 km) |
| Ortahisar to Omegna | 1,434.98 mi (2,309.38 km) |
| Ortahisar to Opera | 1,390.15 mi (2,237.24 km) |
| Ortahisar to Oppeano | 1,295.42 mi (2,084.78 km) |
| Ortahisar to Orbassano | 1,466.74 mi (2,360.49 km) |
