| Genappe to Obernburg am Main | 213.90 mi (344.25 km) |
| Genappe to Obernkirchen | 231.63 mi (372.77 km) |
| Genappe to Oberschleissheim | 358.48 mi (576.92 km) |
| Genappe to Oberstdorf | 343.90 mi (553.46 km) |
| Genappe to Obertraubling | 362.11 mi (582.76 km) |
| Genappe to Obertshausen | 196.77 mi (316.67 km) |
| Genappe to Oberursel | 183.78 mi (295.76 km) |
| Genappe to Ochsenfurt | 257.24 mi (413.99 km) |
| Genappe to Ochsenhausen | 302.82 mi (487.35 km) |
| Genappe to Ochtrup | 162.02 mi (260.75 km) |
| Genappe to Odenthal | 120.19 mi (193.43 km) |
| Genappe to Oelde | 181.36 mi (291.87 km) |
| Genappe to Oelsnitz | 339.16 mi (545.83 km) |
| Genappe to Oer-Erkenschwick | 141.19 mi (227.23 km) |
| Genappe to Oerlinghausen | 205.20 mi (330.23 km) |
