| Overlea to Oberkirch | 4,037.59 mi (6,497.87 km) |
| Overlea to Obernburg am Main | 4,042.12 mi (6,505.17 km) |
| Overlea to Obernkirchen | 3,971.39 mi (6,391.34 km) |
| Overlea to Oberschleissheim | 4,189.36 mi (6,742.13 km) |
| Overlea to Oberstdorf | 4,163.05 mi (6,699.78 km) |
| Overlea to Obertraubling | 4,190.81 mi (6,744.45 km) |
| Overlea to Obertshausen | 4,023.07 mi (6,474.50 km) |
| Overlea to Oberursel | 4,008.80 mi (6,451.54 km) |
| Overlea to Ochsenfurt | 4,085.05 mi (6,574.25 km) |
| Overlea to Ochsenhausen | 4,128.57 mi (6,644.30 km) |
| Overlea to Ochtrup | 3,898.15 mi (6,273.47 km) |
| Overlea to Odenthal | 3,926.96 mi (6,319.84 km) |
| Overlea to Oelde | 3,945.79 mi (6,350.13 km) |
| Overlea to Oelsnitz | 4,145.02 mi (6,670.77 km) |
| Overlea to Oer-Erkenschwick | 3,915.68 mi (6,301.68 km) |
