| Petrovaradin to Oberkirch | 600.05 mi (965.69 km) |
| Petrovaradin to Obernburg am Main | 591.42 mi (951.80 km) |
| Petrovaradin to Obernkirchen | 687.65 mi (1,106.66 km) |
| Petrovaradin to Oberschleissheim | 443.92 mi (714.42 km) |
| Petrovaradin to Oberstdorf | 480.76 mi (773.71 km) |
| Petrovaradin to Obertraubling | 443.52 mi (713.78 km) |
| Petrovaradin to Obertshausen | 610.94 mi (983.21 km) |
| Petrovaradin to Oberursel | 625.44 mi (1,006.54 km) |
| Petrovaradin to Ochsenfurt | 548.94 mi (883.43 km) |
| Petrovaradin to Ochsenhausen | 508.68 mi (818.63 km) |
| Petrovaradin to Ochtrup | 749.65 mi (1,206.45 km) |
| Petrovaradin to Odenthal | 709.26 mi (1,141.44 km) |
| Petrovaradin to Oelde | 701.48 mi (1,128.93 km) |
| Petrovaradin to Oelsnitz | 504.46 mi (811.85 km) |
| Petrovaradin to Oer-Erkenschwick | 725.91 mi (1,168.25 km) |
