| Adria to Oberkirch | 305.09 mi (490.99 km) |
| Adria to Obernburg am Main | 357.71 mi (575.67 km) |
| Adria to Obernkirchen | 516.14 mi (830.64 km) |
| Adria to Oberschleissheim | 222.28 mi (357.73 km) |
| Adria to Oberstdorf | 183.69 mi (295.62 km) |
| Adria to Obertraubling | 270.61 mi (435.51 km) |
| Adria to Obertshausen | 377.59 mi (607.67 km) |
| Adria to Oberursel | 390.96 mi (629.19 km) |
| Adria to Ochsenfurt | 331.08 mi (532.82 km) |
| Adria to Ochsenhausen | 231.44 mi (372.46 km) |
| Adria to Ochtrup | 541.63 mi (871.66 km) |
| Adria to Odenthal | 471.81 mi (759.30 km) |
| Adria to Oelde | 501.43 mi (806.97 km) |
| Adria to Oelsnitz | 370.84 mi (596.81 km) |
| Adria to Oer-Erkenschwick | 505.72 mi (813.88 km) |
