| Genc to Oberkirch | 1,742.21 mi (2,803.82 km) |
| Genc to Obernburg am Main | 1,715.18 mi (2,760.32 km) |
| Genc to Obernkirchen | 1,765.06 mi (2,840.58 km) |
| Genc to Oberschleissheim | 1,581.87 mi (2,545.78 km) |
| Genc to Oberstdorf | 1,628.16 mi (2,620.27 km) |
| Genc to Obertraubling | 1,568.06 mi (2,523.55 km) |
| Genc to Obertshausen | 1,732.38 mi (2,787.99 km) |
| Genc to Oberursel | 1,745.74 mi (2,809.50 km) |
| Genc to Ochsenfurt | 1,671.89 mi (2,690.65 km) |
| Genc to Ochsenhausen | 1,651.98 mi (2,658.61 km) |
| Genc to Ochtrup | 1,841.23 mi (2,963.17 km) |
| Genc to Odenthal | 1,822.17 mi (2,932.50 km) |
| Genc to Oelde | 1,794.64 mi (2,888.19 km) |
| Genc to Oelsnitz | 1,598.52 mi (2,572.57 km) |
| Genc to Oer-Erkenschwick | 1,827.70 mi (2,941.40 km) |
