| Gondomar to Oberkirch | 957.60 mi (1,541.10 km) |
| Gondomar to Obernburg am Main | 1,041.42 mi (1,676.00 km) |
| Gondomar to Obernkirchen | 1,129.92 mi (1,818.44 km) |
| Gondomar to Oberschleissheim | 1,097.83 mi (1,766.78 km) |
| Gondomar to Oberstdorf | 1,022.71 mi (1,645.89 km) |
| Gondomar to Obertraubling | 1,140.36 mi (1,835.23 km) |
| Gondomar to Obertshausen | 1,037.08 mi (1,669.02 km) |
| Gondomar to Oberursel | 1,032.03 mi (1,660.89 km) |
| Gondomar to Ochsenfurt | 1,072.11 mi (1,725.40 km) |
| Gondomar to Ochsenhausen | 1,023.53 mi (1,647.22 km) |
| Gondomar to Ochtrup | 1,062.86 mi (1,710.51 km) |
| Gondomar to Odenthal | 1,010.41 mi (1,626.09 km) |
| Gondomar to Oelde | 1,079.07 mi (1,736.59 km) |
| Gondomar to Oelsnitz | 1,179.04 mi (1,897.48 km) |
| Gondomar to Oer-Erkenschwick | 1,040.46 mi (1,674.45 km) |
