| Altadena to Oberkirch | 5,831.87 mi (9,385.49 km) |
| Altadena to Obernburg am Main | 5,796.38 mi (9,328.37 km) |
| Altadena to Obernkirchen | 5,670.24 mi (9,125.36 km) |
| Altadena to Oberschleissheim | 5,951.24 mi (9,577.59 km) |
| Altadena to Oberstdorf | 5,957.23 mi (9,587.23 km) |
| Altadena to Obertraubling | 5,930.46 mi (9,544.15 km) |
| Altadena to Obertshausen | 5,775.57 mi (9,294.88 km) |
| Altadena to Oberursel | 5,760.97 mi (9,271.38 km) |
| Altadena to Ochsenfurt | 5,833.43 mi (9,388.00 km) |
| Altadena to Ochsenhausen | 5,912.47 mi (9,515.20 km) |
| Altadena to Ochtrup | 5,618.39 mi (9,041.92 km) |
| Altadena to Odenthal | 5,675.45 mi (9,133.76 km) |
| Altadena to Oelde | 5,664.96 mi (9,116.88 km) |
| Altadena to Oelsnitz | 5,852.84 mi (9,419.24 km) |
| Altadena to Oer-Erkenschwick | 5,648.61 mi (9,090.57 km) |
