| Ratzeburg to Oberkirch | 375.18 mi (603.80 km) |
| Ratzeburg to Obernburg am Main | 275.41 mi (443.22 km) |
| Ratzeburg to Obernkirchen | 120.08 mi (193.25 km) |
| Ratzeburg to Oberschleissheim | 378.22 mi (608.69 km) |
| Ratzeburg to Oberstdorf | 435.11 mi (700.24 km) |
| Ratzeburg to Obertraubling | 332.75 mi (535.51 km) |
| Ratzeburg to Obertshausen | 263.99 mi (424.84 km) |
| Ratzeburg to Oberursel | 258.68 mi (416.31 km) |
| Ratzeburg to Ochsenfurt | 281.35 mi (452.79 km) |
| Ratzeburg to Ochsenhausen | 390.40 mi (628.29 km) |
| Ratzeburg to Ochtrup | 180.57 mi (290.60 km) |
| Ratzeburg to Odenthal | 239.61 mi (385.62 km) |
| Ratzeburg to Oelde | 168.65 mi (271.41 km) |
| Ratzeburg to Oelsnitz | 234.69 mi (377.70 km) |
| Ratzeburg to Oer-Erkenschwick | 204.18 mi (328.60 km) |
