| Hanover to Orbetello | 4,371.01 mi (7,034.46 km) |
| Hanover to Oria | 4,723.09 mi (7,601.07 km) |
| Hanover to Oristano | 4,343.01 mi (6,989.40 km) |
| Hanover to Orta Nova | 4,607.79 mi (7,415.53 km) |
| Hanover to Orte | 4,421.56 mi (7,115.81 km) |
| Hanover to Ortona | 4,512.90 mi (7,262.80 km) |
| Hanover to Orvieto | 4,400.33 mi (7,081.64 km) |
| Hanover to Orzinuovi | 4,214.30 mi (6,782.26 km) |
| Hanover to Osimo | 4,432.17 mi (7,132.89 km) |
| Hanover to Ospitaletto | 4,215.09 mi (6,783.54 km) |
| Hanover to Ostuni | 4,711.80 mi (7,582.91 km) |
| Hanover to Ottaviano | 4,572.13 mi (7,358.14 km) |
| Hanover to Ovada | 4,184.23 mi (6,733.87 km) |
| Hanover to Ozieri | 4,337.86 mi (6,981.10 km) |
| Hanover to Paceco | 4,593.75 mi (7,392.93 km) |
