| Smethwick to Oberkirch | 518.83 mi (834.98 km) |
| Smethwick to Obernburg am Main | 514.42 mi (827.87 km) |
| Smethwick to Obernkirchen | 467.39 mi (752.18 km) |
| Smethwick to Oberschleissheim | 663.23 mi (1,067.37 km) |
| Smethwick to Oberstdorf | 646.66 mi (1,040.69 km) |
| Smethwick to Obertraubling | 663.14 mi (1,067.23 km) |
| Smethwick to Obertshausen | 495.45 mi (797.36 km) |
| Smethwick to Oberursel | 481.27 mi (774.53 km) |
| Smethwick to Ochsenfurt | 557.39 mi (897.03 km) |
| Smethwick to Ochsenhausen | 607.28 mi (977.32 km) |
| Smethwick to Ochtrup | 386.80 mi (622.50 km) |
| Smethwick to Odenthal | 401.09 mi (645.49 km) |
| Smethwick to Oelde | 430.91 mi (693.48 km) |
| Smethwick to Oelsnitz | 624.16 mi (1,004.49 km) |
| Smethwick to Oer-Erkenschwick | 395.69 mi (636.80 km) |
