| Pontardulais to Oberkirch | 579.30 mi (932.29 km) |
| Pontardulais to Obernburg am Main | 589.36 mi (948.48 km) |
| Pontardulais to Obernkirchen | 560.40 mi (901.87 km) |
| Pontardulais to Oberschleissheim | 731.76 mi (1,177.65 km) |
| Pontardulais to Oberstdorf | 705.62 mi (1,135.58 km) |
| Pontardulais to Obertraubling | 737.71 mi (1,187.24 km) |
| Pontardulais to Obertshausen | 571.67 mi (920.02 km) |
| Pontardulais to Oberursel | 558.15 mi (898.26 km) |
| Pontardulais to Ochsenfurt | 632.71 mi (1,018.24 km) |
| Pontardulais to Ochsenhausen | 670.12 mi (1,078.45 km) |
| Pontardulais to Ochtrup | 478.91 mi (770.73 km) |
| Pontardulais to Odenthal | 483.01 mi (777.32 km) |
| Pontardulais to Oelde | 520.64 mi (837.89 km) |
| Pontardulais to Oelsnitz | 707.89 mi (1,139.24 km) |
| Pontardulais to Oer-Erkenschwick | 483.30 mi (777.79 km) |
