| Ketsch to Obernburg am Main | 42.59 mi (68.55 km) |
| Ketsch to Obernkirchen | 202.03 mi (325.13 km) |
| Ketsch to Oberschleissheim | 158.07 mi (254.39 km) |
| Ketsch to Oberstdorf | 157.09 mi (252.82 km) |
| Ketsch to Obertraubling | 166.44 mi (267.86 km) |
| Ketsch to Obertshausen | 50.24 mi (80.86 km) |
| Ketsch to Oberursel | 57.90 mi (93.18 km) |
| Ketsch to Ochsenfurt | 71.53 mi (115.12 km) |
| Ketsch to Ochsenhausen | 110.21 mi (177.36 km) |
| Ketsch to Ochtrup | 204.79 mi (329.57 km) |
| Ketsch to Odenthal | 131.15 mi (211.06 km) |
| Ketsch to Oelde | 171.32 mi (275.70 km) |
| Ketsch to Oelsnitz | 177.25 mi (285.25 km) |
| Ketsch to Oer-Erkenschwick | 167.07 mi (268.88 km) |
| Ketsch to Oerlinghausen | 179.80 mi (289.36 km) |
