| Riorges to Obernburg am Main | 352.78 mi (567.75 km) |
| Riorges to Obernkirchen | 487.10 mi (783.91 km) |
| Riorges to Oberschleissheim | 384.93 mi (619.49 km) |
| Riorges to Oberstdorf | 310.10 mi (499.06 km) |
| Riorges to Obertraubling | 429.39 mi (691.04 km) |
| Riorges to Obertshausen | 355.22 mi (571.67 km) |
| Riorges to Oberursel | 355.39 mi (571.95 km) |
| Riorges to Ochsenfurt | 374.22 mi (602.24 km) |
| Riorges to Ochsenhausen | 311.31 mi (501.00 km) |
| Riorges to Ochtrup | 448.88 mi (722.40 km) |
| Riorges to Odenthal | 372.34 mi (599.22 km) |
| Riorges to Oelde | 441.25 mi (710.12 km) |
| Riorges to Oelsnitz | 480.38 mi (773.09 km) |
| Riorges to Oer-Erkenschwick | 413.40 mi (665.30 km) |
| Riorges to Oerlinghausen | 459.66 mi (739.75 km) |
