| Celorico de Basto to Oberkirch | 925.82 mi (1,489.97 km) |
| Celorico de Basto to Obernburg am Main | 1,009.96 mi (1,625.37 km) |
| Celorico de Basto to Obernkirchen | 1,099.56 mi (1,769.57 km) |
| Celorico de Basto to Oberschleissheim | 1,065.82 mi (1,715.28 km) |
| Celorico de Basto to Oberstdorf | 990.67 mi (1,594.32 km) |
| Celorico de Basto to Obertraubling | 1,108.43 mi (1,783.85 km) |
| Celorico de Basto to Obertshausen | 1,005.74 mi (1,618.59 km) |
| Celorico de Basto to Oberursel | 1,000.79 mi (1,610.61 km) |
| Celorico de Basto to Ochsenfurt | 1,040.48 mi (1,674.50 km) |
| Celorico de Basto to Ochsenhausen | 991.56 mi (1,595.75 km) |
| Celorico de Basto to Ochtrup | 1,032.98 mi (1,662.42 km) |
| Celorico de Basto to Odenthal | 979.87 mi (1,576.96 km) |
| Celorico de Basto to Oelde | 1,048.71 mi (1,687.73 km) |
| Celorico de Basto to Oelsnitz | 1,147.44 mi (1,846.63 km) |
| Celorico de Basto to Oer-Erkenschwick | 1,010.23 mi (1,625.81 km) |
