| Cabeceiras de Basto to Oberkirch | 920.22 mi (1,480.95 km) |
| Cabeceiras de Basto to Obernburg am Main | 1,003.82 mi (1,615.50 km) |
| Cabeceiras de Basto to Obernkirchen | 1,092.34 mi (1,757.95 km) |
| Cabeceiras de Basto to Oberschleissheim | 1,060.94 mi (1,707.41 km) |
| Cabeceiras de Basto to Oberstdorf | 986.11 mi (1,586.99 km) |
| Cabeceiras de Basto to Obertraubling | 1,103.23 mi (1,775.47 km) |
| Cabeceiras de Basto to Obertshausen | 999.44 mi (1,608.44 km) |
| Cabeceiras de Basto to Oberursel | 994.37 mi (1,600.28 km) |
| Cabeceiras de Basto to Ochsenfurt | 1,034.61 mi (1,665.04 km) |
| Cabeceiras de Basto to Ochsenhausen | 986.54 mi (1,587.69 km) |
| Cabeceiras de Basto to Ochtrup | 1,025.43 mi (1,650.27 km) |
| Cabeceiras de Basto to Odenthal | 972.78 mi (1,565.54 km) |
| Cabeceiras de Basto to Oelde | 1,041.48 mi (1,676.11 km) |
| Cabeceiras de Basto to Oelsnitz | 1,141.51 mi (1,837.08 km) |
| Cabeceiras de Basto to Oer-Erkenschwick | 1,002.91 mi (1,614.02 km) |
