| Arcos de Valdevez to Oberkirch | 924.05 mi (1,487.12 km) |
| Arcos de Valdevez to Obernburg am Main | 1,005.78 mi (1,618.65 km) |
| Arcos de Valdevez to Obernkirchen | 1,090.13 mi (1,754.40 km) |
| Arcos de Valdevez to Oberschleissheim | 1,067.07 mi (1,717.29 km) |
| Arcos de Valdevez to Oberstdorf | 993.33 mi (1,598.61 km) |
| Arcos de Valdevez to Obertraubling | 1,108.31 mi (1,783.66 km) |
| Arcos de Valdevez to Obertshausen | 1,000.79 mi (1,610.61 km) |
| Arcos de Valdevez to Oberursel | 995.30 mi (1,601.78 km) |
| Arcos de Valdevez to Ochsenfurt | 1,037.46 mi (1,669.63 km) |
| Arcos de Valdevez to Ochsenhausen | 992.32 mi (1,596.99 km) |
| Arcos de Valdevez to Ochtrup | 1,021.91 mi (1,644.61 km) |
| Arcos de Valdevez to Odenthal | 971.15 mi (1,562.92 km) |
| Arcos de Valdevez to Oelde | 1,039.29 mi (1,672.58 km) |
| Arcos de Valdevez to Oelsnitz | 1,144.10 mi (1,841.24 km) |
| Arcos de Valdevez to Oer-Erkenschwick | 1,000.35 mi (1,609.91 km) |
