| Valongo to Oberkirch | 954.82 mi (1,536.63 km) |
| Valongo to Obernburg am Main | 1,038.60 mi (1,671.47 km) |
| Valongo to Obernkirchen | 1,127.05 mi (1,813.82 km) |
| Valongo to Oberschleissheim | 1,095.12 mi (1,762.42 km) |
| Valongo to Oberstdorf | 1,020.03 mi (1,641.58 km) |
| Valongo to Obertraubling | 1,137.62 mi (1,830.82 km) |
| Valongo to Obertshausen | 1,034.25 mi (1,664.46 km) |
| Valongo to Oberursel | 1,029.19 mi (1,656.32 km) |
| Valongo to Ochsenfurt | 1,069.31 mi (1,720.90 km) |
| Valongo to Ochsenhausen | 1,020.81 mi (1,642.83 km) |
| Valongo to Ochtrup | 1,059.99 mi (1,705.88 km) |
| Valongo to Odenthal | 1,007.54 mi (1,621.48 km) |
| Valongo to Oelde | 1,076.20 mi (1,731.97 km) |
| Valongo to Oelsnitz | 1,176.24 mi (1,892.97 km) |
| Valongo to Oer-Erkenschwick | 1,037.58 mi (1,669.83 km) |
