| Swallownest to Oberkirch | 527.52 mi (848.96 km) |
| Swallownest to Obernburg am Main | 510.18 mi (821.05 km) |
| Swallownest to Obernkirchen | 442.20 mi (711.65 km) |
| Swallownest to Oberschleissheim | 663.07 mi (1,067.11 km) |
| Swallownest to Oberstdorf | 654.76 mi (1,053.73 km) |
| Swallownest to Obertraubling | 657.35 mi (1,057.90 km) |
| Swallownest to Obertshausen | 490.26 mi (788.99 km) |
| Swallownest to Oberursel | 475.65 mi (765.48 km) |
| Swallownest to Ochsenfurt | 552.12 mi (888.55 km) |
| Swallownest to Ochsenhausen | 612.69 mi (986.03 km) |
| Swallownest to Ochtrup | 364.48 mi (586.57 km) |
| Swallownest to Odenthal | 391.74 mi (630.44 km) |
| Swallownest to Oelde | 411.10 mi (661.59 km) |
| Swallownest to Oelsnitz | 609.14 mi (980.32 km) |
| Swallownest to Oer-Erkenschwick | 379.49 mi (610.73 km) |
