| Karlovy Vary to Obernburg am Main | 167.75 mi (269.97 km) |
| Karlovy Vary to Obernkirchen | 214.79 mi (345.66 km) |
| Karlovy Vary to Oberschleissheim | 148.98 mi (239.76 km) |
| Karlovy Vary to Oberstdorf | 227.80 mi (366.60 km) |
| Karlovy Vary to Obertraubling | 92.93 mi (149.55 km) |
| Karlovy Vary to Obertshausen | 179.17 mi (288.35 km) |
| Karlovy Vary to Oberursel | 189.90 mi (305.61 km) |
| Karlovy Vary to Ochsenfurt | 131.05 mi (210.90 km) |
| Karlovy Vary to Ochsenhausen | 199.23 mi (320.63 km) |
| Karlovy Vary to Ochtrup | 281.12 mi (452.42 km) |
| Karlovy Vary to Odenthal | 258.20 mi (415.54 km) |
| Karlovy Vary to Oelde | 233.11 mi (375.15 km) |
| Karlovy Vary to Oelsnitz | 33.69 mi (54.21 km) |
| Karlovy Vary to Oer-Erkenschwick | 263.41 mi (423.91 km) |
| Karlovy Vary to Oerlinghausen | 218.33 mi (351.36 km) |
