| Rostusa to Oberkirch | 774.13 mi (1,245.84 km) |
| Rostusa to Obernburg am Main | 791.27 mi (1,273.43 km) |
| Rostusa to Obernkirchen | 911.73 mi (1,467.29 km) |
| Rostusa to Oberschleissheim | 636.13 mi (1,023.75 km) |
| Rostusa to Oberstdorf | 646.51 mi (1,040.46 km) |
| Rostusa to Obertraubling | 652.12 mi (1,049.48 km) |
| Rostusa to Obertshausen | 811.91 mi (1,306.65 km) |
| Rostusa to Oberursel | 826.67 mi (1,330.40 km) |
| Rostusa to Ochsenfurt | 751.98 mi (1,210.19 km) |
| Rostusa to Ochsenhausen | 685.68 mi (1,103.49 km) |
| Rostusa to Ochtrup | 964.66 mi (1,552.47 km) |
| Rostusa to Odenthal | 912.60 mi (1,468.69 km) |
| Rostusa to Oelde | 917.57 mi (1,476.68 km) |
| Rostusa to Oelsnitz | 729.72 mi (1,174.37 km) |
| Rostusa to Oer-Erkenschwick | 936.09 mi (1,506.48 km) |
