| Opava to Obernburg am Main | 389.92 mi (627.51 km) |
| Opava to Obernkirchen | 413.42 mi (665.34 km) |
| Opava to Oberschleissheim | 309.43 mi (497.98 km) |
| Opava to Oberstdorf | 389.05 mi (626.11 km) |
| Opava to Obertraubling | 266.25 mi (428.48 km) |
| Opava to Obertshausen | 402.70 mi (648.08 km) |
| Opava to Oberursel | 413.78 mi (665.92 km) |
| Opava to Ochsenfurt | 349.98 mi (563.25 km) |
| Opava to Ochsenhausen | 382.74 mi (615.96 km) |
| Opava to Ochtrup | 490.27 mi (789.02 km) |
| Opava to Odenthal | 479.80 mi (772.16 km) |
| Opava to Oelde | 444.49 mi (715.34 km) |
| Opava to Oelsnitz | 255.96 mi (411.93 km) |
| Opava to Oer-Erkenschwick | 479.51 mi (771.70 km) |
| Opava to Oerlinghausen | 425.45 mi (684.70 km) |
