| Caldiran to Oberkirch | 1,879.46 mi (3,024.70 km) |
| Caldiran to Obernburg am Main | 1,845.46 mi (2,969.97 km) |
| Caldiran to Obernkirchen | 1,882.89 mi (3,030.22 km) |
| Caldiran to Oberschleissheim | 1,718.49 mi (2,765.64 km) |
| Caldiran to Oberstdorf | 1,769.68 mi (2,848.03 km) |
| Caldiran to Obertraubling | 1,700.48 mi (2,736.66 km) |
| Caldiran to Obertshausen | 1,861.73 mi (2,996.17 km) |
| Caldiran to Oberursel | 1,874.60 mi (3,016.88 km) |
| Caldiran to Ochsenfurt | 1,802.44 mi (2,900.75 km) |
| Caldiran to Ochsenhausen | 1,790.48 mi (2,881.50 km) |
| Caldiran to Ochtrup | 1,961.11 mi (3,156.09 km) |
| Caldiran to Odenthal | 1,947.93 mi (3,134.90 km) |
| Caldiran to Oelde | 1,915.60 mi (3,082.86 km) |
| Caldiran to Oelsnitz | 1,723.12 mi (2,773.09 km) |
| Caldiran to Oer-Erkenschwick | 1,950.36 mi (3,138.79 km) |
