| Kalundborg to Obernburg am Main | 411.66 mi (662.50 km) |
| Kalundborg to Obernkirchen | 249.10 mi (400.89 km) |
| Kalundborg to Oberschleissheim | 513.87 mi (826.99 km) |
| Kalundborg to Oberstdorf | 572.56 mi (921.44 km) |
| Kalundborg to Obertraubling | 466.23 mi (750.33 km) |
| Kalundborg to Obertshausen | 399.08 mi (642.27 km) |
| Kalundborg to Oberursel | 392.57 mi (631.79 km) |
| Kalundborg to Ochsenfurt | 418.90 mi (674.15 km) |
| Kalundborg to Ochsenhausen | 527.96 mi (849.67 km) |
| Kalundborg to Ochtrup | 287.58 mi (462.82 km) |
| Kalundborg to Odenthal | 360.30 mi (579.85 km) |
| Kalundborg to Oelde | 291.59 mi (469.28 km) |
| Kalundborg to Oelsnitz | 366.51 mi (589.84 km) |
| Kalundborg to Oer-Erkenschwick | 320.09 mi (515.13 km) |
| Kalundborg to Oerlinghausen | 274.92 mi (442.43 km) |
