| Gagnef to Oberkirch | 878.43 mi (1,413.70 km) |
| Gagnef to Obernburg am Main | 778.69 mi (1,253.17 km) |
| Gagnef to Obernkirchen | 618.65 mi (995.62 km) |
| Gagnef to Oberschleissheim | 864.62 mi (1,391.47 km) |
| Gagnef to Oberstdorf | 931.39 mi (1,498.93 km) |
| Gagnef to Obertraubling | 812.00 mi (1,306.79 km) |
| Gagnef to Obertshausen | 767.28 mi (1,234.82 km) |
| Gagnef to Oberursel | 761.46 mi (1,225.45 km) |
| Gagnef to Ochsenfurt | 781.54 mi (1,257.77 km) |
| Gagnef to Ochsenhausen | 889.30 mi (1,431.18 km) |
| Gagnef to Ochtrup | 652.76 mi (1,050.51 km) |
| Gagnef to Odenthal | 728.55 mi (1,172.48 km) |
| Gagnef to Oelde | 660.85 mi (1,063.54 km) |
| Gagnef to Oelsnitz | 712.61 mi (1,146.84 km) |
| Gagnef to Oer-Erkenschwick | 687.43 mi (1,106.30 km) |
