| Olivenza to Oberkirch | 1,016.40 mi (1,635.73 km) |
| Olivenza to Obernburg am Main | 1,108.99 mi (1,784.75 km) |
| Olivenza to Obernkirchen | 1,218.16 mi (1,960.43 km) |
| Olivenza to Oberschleissheim | 1,140.93 mi (1,836.15 km) |
| Olivenza to Oberstdorf | 1,060.79 mi (1,707.18 km) |
| Olivenza to Obertraubling | 1,188.88 mi (1,913.32 km) |
| Olivenza to Obertshausen | 1,108.02 mi (1,783.19 km) |
| Olivenza to Oberursel | 1,105.28 mi (1,778.78 km) |
| Olivenza to Ochsenfurt | 1,134.32 mi (1,825.52 km) |
| Olivenza to Ochsenhausen | 1,070.07 mi (1,722.10 km) |
| Olivenza to Ochtrup | 1,158.49 mi (1,864.41 km) |
| Olivenza to Odenthal | 1,097.26 mi (1,765.87 km) |
| Olivenza to Oelde | 1,167.85 mi (1,879.48 km) |
| Olivenza to Oelsnitz | 1,241.15 mi (1,997.44 km) |
| Olivenza to Oer-Erkenschwick | 1,131.59 mi (1,821.11 km) |
