| Grunstadt to Obernburg am Main | 47.35 mi (76.19 km) |
| Grunstadt to Obernkirchen | 190.89 mi (307.21 km) |
| Grunstadt to Oberschleissheim | 179.22 mi (288.42 km) |
| Grunstadt to Oberstdorf | 177.77 mi (286.09 km) |
| Grunstadt to Obertraubling | 185.02 mi (297.76 km) |
| Grunstadt to Obertshausen | 45.40 mi (73.06 km) |
| Grunstadt to Oberursel | 47.44 mi (76.35 km) |
| Grunstadt to Ochsenfurt | 85.18 mi (137.09 km) |
| Grunstadt to Ochsenhausen | 131.35 mi (211.39 km) |
| Grunstadt to Ochtrup | 187.07 mi (301.06 km) |
| Grunstadt to Odenthal | 111.29 mi (179.11 km) |
| Grunstadt to Oelde | 156.44 mi (251.76 km) |
| Grunstadt to Oelsnitz | 186.99 mi (300.93 km) |
| Grunstadt to Oer-Erkenschwick | 148.77 mi (239.42 km) |
| Grunstadt to Oerlinghausen | 167.08 mi (268.88 km) |
