| Oliveira do Hospital to Oberkirch | 965.20 mi (1,553.34 km) |
| Oliveira do Hospital to Obernburg am Main | 1,052.63 mi (1,694.04 km) |
| Oliveira do Hospital to Obernkirchen | 1,149.31 mi (1,849.63 km) |
| Oliveira do Hospital to Oberschleissheim | 1,100.11 mi (1,770.45 km) |
| Oliveira do Hospital to Oberstdorf | 1,022.90 mi (1,646.20 km) |
| Oliveira do Hospital to Obertraubling | 1,144.75 mi (1,842.30 km) |
| Oliveira do Hospital to Obertshausen | 1,049.55 mi (1,689.09 km) |
| Oliveira do Hospital to Oberursel | 1,045.37 mi (1,682.36 km) |
| Oliveira do Hospital to Ochsenfurt | 1,081.39 mi (1,740.33 km) |
| Oliveira do Hospital to Ochsenhausen | 1,026.82 mi (1,652.51 km) |
| Oliveira do Hospital to Ochtrup | 1,084.98 mi (1,746.11 km) |
| Oliveira do Hospital to Odenthal | 1,028.93 mi (1,655.91 km) |
| Oliveira do Hospital to Oelde | 1,098.54 mi (1,767.93 km) |
| Oliveira do Hospital to Oelsnitz | 1,188.58 mi (1,912.83 km) |
| Oliveira do Hospital to Oer-Erkenschwick | 1,060.74 mi (1,707.10 km) |
