| Sulmona to Oberkirch | 530.15 mi (853.20 km) |
| Sulmona to Obernburg am Main | 585.09 mi (941.62 km) |
| Sulmona to Obernkirchen | 740.86 mi (1,192.31 km) |
| Sulmona to Oberschleissheim | 443.61 mi (713.93 km) |
| Sulmona to Oberstdorf | 411.33 mi (661.97 km) |
| Sulmona to Obertraubling | 485.47 mi (781.29 km) |
| Sulmona to Obertshausen | 605.11 mi (973.82 km) |
| Sulmona to Oberursel | 618.57 mi (995.49 km) |
| Sulmona to Ochsenfurt | 556.93 mi (896.29 km) |
| Sulmona to Ochsenhausen | 459.13 mi (738.89 km) |
| Sulmona to Ochtrup | 769.14 mi (1,237.82 km) |
| Sulmona to Odenthal | 699.40 mi (1,125.57 km) |
| Sulmona to Oelde | 728.37 mi (1,172.20 km) |
| Sulmona to Oelsnitz | 584.26 mi (940.27 km) |
| Sulmona to Oer-Erkenschwick | 733.39 mi (1,180.28 km) |
