| Grevenmacher to Oberkirch | 108.61 mi (174.79 km) |
| Grevenmacher to Obernburg am Main | 120.99 mi (194.72 km) |
| Grevenmacher to Obernkirchen | 213.22 mi (343.14 km) |
| Grevenmacher to Oberschleissheim | 252.55 mi (406.44 km) |
| Grevenmacher to Oberstdorf | 235.38 mi (378.81 km) |
| Grevenmacher to Obertraubling | 262.45 mi (422.37 km) |
| Grevenmacher to Obertshausen | 109.78 mi (176.67 km) |
| Grevenmacher to Oberursel | 101.58 mi (163.47 km) |
| Grevenmacher to Ochsenfurt | 162.11 mi (260.89 km) |
| Grevenmacher to Ochsenhausen | 194.23 mi (312.58 km) |
| Grevenmacher to Ochtrup | 177.48 mi (285.62 km) |
| Grevenmacher to Odenthal | 98.08 mi (157.85 km) |
| Grevenmacher to Oelde | 166.42 mi (267.82 km) |
| Grevenmacher to Oelsnitz | 258.98 mi (416.78 km) |
| Grevenmacher to Oer-Erkenschwick | 140.09 mi (225.45 km) |
