| Aveiro to Oberkirch | 984.59 mi (1,584.55 km) |
| Aveiro to Obernburg am Main | 1,069.76 mi (1,721.61 km) |
| Aveiro to Obernkirchen | 1,160.95 mi (1,868.38 km) |
| Aveiro to Oberschleissheim | 1,122.84 mi (1,807.04 km) |
| Aveiro to Oberstdorf | 1,046.84 mi (1,684.73 km) |
| Aveiro to Obertraubling | 1,166.22 mi (1,876.85 km) |
| Aveiro to Obertshausen | 1,065.85 mi (1,715.32 km) |
| Aveiro to Oberursel | 1,061.09 mi (1,707.66 km) |
| Aveiro to Ochsenfurt | 1,099.78 mi (1,769.92 km) |
| Aveiro to Ochsenhausen | 1,048.91 mi (1,688.06 km) |
| Aveiro to Ochtrup | 1,094.67 mi (1,761.70 km) |
| Aveiro to Odenthal | 1,041.13 mi (1,675.54 km) |
| Aveiro to Oelde | 1,110.11 mi (1,786.55 km) |
| Aveiro to Oelsnitz | 1,206.84 mi (1,942.22 km) |
| Aveiro to Oer-Erkenschwick | 1,071.72 mi (1,724.77 km) |
