| Hanover to Oberkirch | 4,037.22 mi (6,497.27 km) |
| Hanover to Obernburg am Main | 4,040.55 mi (6,502.64 km) |
| Hanover to Obernkirchen | 3,968.04 mi (6,385.94 km) |
| Hanover to Oberschleissheim | 4,188.36 mi (6,740.51 km) |
| Hanover to Oberstdorf | 4,162.96 mi (6,699.63 km) |
| Hanover to Obertraubling | 4,189.15 mi (6,741.79 km) |
| Hanover to Obertshausen | 4,021.40 mi (6,471.82 km) |
| Hanover to Oberursel | 4,007.09 mi (6,448.78 km) |
| Hanover to Ochsenfurt | 4,083.40 mi (6,571.60 km) |
| Hanover to Ochsenhausen | 4,128.09 mi (6,643.52 km) |
| Hanover to Ochtrup | 3,895.23 mi (6,268.77 km) |
| Hanover to Odenthal | 3,924.95 mi (6,316.59 km) |
| Hanover to Oelde | 3,942.95 mi (6,345.57 km) |
| Hanover to Oelsnitz | 4,142.34 mi (6,666.45 km) |
| Hanover to Oer-Erkenschwick | 3,913.18 mi (6,297.65 km) |
