| Gross-Umstadt to Obernburg am Main | 9.45 mi (15.21 km) |
| Gross-Umstadt to Obernkirchen | 166.00 mi (267.15 km) |
| Gross-Umstadt to Oberschleissheim | 163.36 mi (262.91 km) |
| Gross-Umstadt to Oberstdorf | 180.53 mi (290.54 km) |
| Gross-Umstadt to Obertraubling | 158.10 mi (254.44 km) |
| Gross-Umstadt to Obertshausen | 14.52 mi (23.36 km) |
| Gross-Umstadt to Oberursel | 28.13 mi (45.26 km) |
| Gross-Umstadt to Ochsenfurt | 52.76 mi (84.91 km) |
| Gross-Umstadt to Ochsenhausen | 132.25 mi (212.84 km) |
| Gross-Umstadt to Ochtrup | 178.45 mi (287.19 km) |
| Gross-Umstadt to Odenthal | 113.50 mi (182.67 km) |
| Gross-Umstadt to Oelde | 140.11 mi (225.48 km) |
| Gross-Umstadt to Oelsnitz | 148.12 mi (238.38 km) |
| Gross-Umstadt to Oer-Erkenschwick | 143.02 mi (230.17 km) |
| Gross-Umstadt to Oerlinghausen | 145.56 mi (234.26 km) |
