| Arruda dos Vinhos to Oberkirch | 1,076.51 mi (1,732.47 km) |
| Arruda dos Vinhos to Obernburg am Main | 1,165.15 mi (1,875.12 km) |
| Arruda dos Vinhos to Obernkirchen | 1,263.62 mi (2,033.61 km) |
| Arruda dos Vinhos to Oberschleissheim | 1,208.74 mi (1,945.27 km) |
| Arruda dos Vinhos to Oberstdorf | 1,130.50 mi (1,819.36 km) |
| Arruda dos Vinhos to Obertraubling | 1,254.41 mi (2,018.77 km) |
| Arruda dos Vinhos to Obertshausen | 1,162.46 mi (1,870.80 km) |
| Arruda dos Vinhos to Oberursel | 1,158.52 mi (1,864.47 km) |
| Arruda dos Vinhos to Ochsenfurt | 1,193.22 mi (1,920.30 km) |
| Arruda dos Vinhos to Ochsenhausen | 1,136.09 mi (1,828.36 km) |
| Arruda dos Vinhos to Ochtrup | 1,199.54 mi (1,930.48 km) |
| Arruda dos Vinhos to Odenthal | 1,143.16 mi (1,839.74 km) |
| Arruda dos Vinhos to Oelde | 1,212.88 mi (1,951.94 km) |
| Arruda dos Vinhos to Oelsnitz | 1,300.41 mi (2,092.81 km) |
| Arruda dos Vinhos to Oer-Erkenschwick | 1,175.18 mi (1,891.26 km) |
