| Groslay to Obernburg am Main | 311.06 mi (500.60 km) |
| Groslay to Obernkirchen | 373.23 mi (600.65 km) |
| Groslay to Oberschleissheim | 424.03 mi (682.41 km) |
| Groslay to Oberstdorf | 381.12 mi (613.36 km) |
| Groslay to Obertraubling | 445.15 mi (716.40 km) |
| Groslay to Obertshausen | 300.32 mi (483.32 km) |
| Groslay to Oberursel | 291.40 mi (468.97 km) |
| Groslay to Ochsenfurt | 350.65 mi (564.32 km) |
| Groslay to Ochsenhausen | 353.45 mi (568.82 km) |
| Groslay to Ochtrup | 307.50 mi (494.87 km) |
| Groslay to Odenthal | 254.67 mi (409.86 km) |
| Groslay to Oelde | 322.38 mi (518.82 km) |
| Groslay to Oelsnitz | 449.55 mi (723.48 km) |
| Groslay to Oer-Erkenschwick | 283.66 mi (456.51 km) |
| Groslay to Oerlinghausen | 345.74 mi (556.41 km) |
