| Castellaneta to Oberkirch | 697.31 mi (1,122.22 km) |
| Castellaneta to Obernburg am Main | 739.60 mi (1,190.27 km) |
| Castellaneta to Obernkirchen | 884.48 mi (1,423.43 km) |
| Castellaneta to Oberschleissheim | 588.74 mi (947.48 km) |
| Castellaneta to Oberstdorf | 572.68 mi (921.65 km) |
| Castellaneta to Obertraubling | 621.02 mi (999.43 km) |
| Castellaneta to Obertshausen | 760.24 mi (1,223.48 km) |
| Castellaneta to Oberursel | 774.43 mi (1,246.33 km) |
| Castellaneta to Ochsenfurt | 706.48 mi (1,136.96 km) |
| Castellaneta to Ochsenhausen | 618.51 mi (995.39 km) |
| Castellaneta to Ochtrup | 922.62 mi (1,484.82 km) |
| Castellaneta to Odenthal | 858.38 mi (1,381.44 km) |
| Castellaneta to Oelde | 878.90 mi (1,414.46 km) |
| Castellaneta to Oelsnitz | 713.88 mi (1,148.88 km) |
| Castellaneta to Oer-Erkenschwick | 889.04 mi (1,430.77 km) |
