| Asenovgrad to Obernburg am Main | 926.14 mi (1,490.47 km) |
| Asenovgrad to Obernkirchen | 1,020.26 mi (1,641.94 km) |
| Asenovgrad to Oberschleissheim | 776.61 mi (1,249.84 km) |
| Asenovgrad to Oberstdorf | 805.60 mi (1,296.49 km) |
| Asenovgrad to Obertraubling | 778.60 mi (1,253.03 km) |
| Asenovgrad to Obertshausen | 945.80 mi (1,522.13 km) |
| Asenovgrad to Oberursel | 960.35 mi (1,545.54 km) |
| Asenovgrad to Ochsenfurt | 883.85 mi (1,422.42 km) |
| Asenovgrad to Ochsenhausen | 837.85 mi (1,348.39 km) |
| Asenovgrad to Ochtrup | 1,084.15 mi (1,744.78 km) |
| Asenovgrad to Odenthal | 1,044.39 mi (1,680.78 km) |
| Asenovgrad to Oelde | 1,035.94 mi (1,667.18 km) |
| Asenovgrad to Oelsnitz | 837.78 mi (1,348.28 km) |
| Asenovgrad to Oer-Erkenschwick | 1,060.96 mi (1,707.45 km) |
| Asenovgrad to Oerlinghausen | 1,023.20 mi (1,646.68 km) |
