| Kalisz to Oberkirch | 494.96 mi (796.56 km) |
| Kalisz to Obernburg am Main | 411.90 mi (662.89 km) |
| Kalisz to Obernkirchen | 382.50 mi (615.58 km) |
| Kalisz to Oberschleissheim | 377.10 mi (606.89 km) |
| Kalisz to Oberstdorf | 460.37 mi (740.90 km) |
| Kalisz to Obertraubling | 324.08 mi (521.56 km) |
| Kalisz to Obertshausen | 419.09 mi (674.46 km) |
| Kalisz to Oberursel | 426.76 mi (686.81 km) |
| Kalisz to Ochsenfurt | 379.43 mi (610.63 km) |
| Kalisz to Ochsenhausen | 442.00 mi (711.34 km) |
| Kalisz to Ochtrup | 464.01 mi (746.75 km) |
| Kalisz to Odenthal | 474.82 mi (764.14 km) |
| Kalisz to Oelde | 424.04 mi (682.42 km) |
| Kalisz to Oelsnitz | 272.75 mi (438.95 km) |
| Kalisz to Oer-Erkenschwick | 463.38 mi (745.74 km) |
