| Sluis to Oberkirch | 283.49 mi (456.23 km) |
| Sluis to Obernburg am Main | 272.06 mi (437.84 km) |
| Sluis to Obernkirchen | 253.68 mi (408.26 km) |
| Sluis to Oberschleissheim | 421.39 mi (678.16 km) |
| Sluis to Oberstdorf | 410.52 mi (660.67 km) |
| Sluis to Obertraubling | 420.86 mi (677.31 km) |
| Sluis to Obertshausen | 253.33 mi (407.70 km) |
| Sluis to Oberursel | 239.33 mi (385.16 km) |
| Sluis to Ochsenfurt | 315.15 mi (507.18 km) |
| Sluis to Ochsenhausen | 368.58 mi (593.17 km) |
| Sluis to Ochtrup | 174.09 mi (280.16 km) |
| Sluis to Odenthal | 162.71 mi (261.86 km) |
| Sluis to Oelde | 207.74 mi (334.32 km) |
| Sluis to Oelsnitz | 387.61 mi (623.79 km) |
| Sluis to Oer-Erkenschwick | 167.89 mi (270.19 km) |
