| Brunswick to Oberkirch | 4,168.95 mi (6,709.28 km) |
| Brunswick to Obernburg am Main | 4,165.08 mi (6,703.04 km) |
| Brunswick to Obernkirchen | 4,081.82 mi (6,569.05 km) |
| Brunswick to Oberschleissheim | 4,315.87 mi (6,945.72 km) |
| Brunswick to Oberstdorf | 4,295.99 mi (6,913.73 km) |
| Brunswick to Obertraubling | 4,312.73 mi (6,940.67 km) |
| Brunswick to Obertshausen | 4,145.39 mi (6,671.37 km) |
| Brunswick to Oberursel | 4,130.86 mi (6,647.97 km) |
| Brunswick to Ochsenfurt | 4,207.36 mi (6,771.09 km) |
| Brunswick to Ochsenhausen | 4,258.91 mi (6,854.05 km) |
| Brunswick to Ochtrup | 4,011.94 mi (6,456.59 km) |
| Brunswick to Odenthal | 4,047.11 mi (6,513.19 km) |
| Brunswick to Oelde | 4,060.05 mi (6,534.01 km) |
| Brunswick to Oelsnitz | 4,259.79 mi (6,855.47 km) |
| Brunswick to Oer-Erkenschwick | 4,032.39 mi (6,489.50 km) |
