| Helsingor to Obernburg am Main | 451.65 mi (726.86 km) |
| Helsingor to Obernkirchen | 296.20 mi (476.69 km) |
| Helsingor to Oberschleissheim | 539.76 mi (868.66 km) |
| Helsingor to Oberstdorf | 604.21 mi (972.39 km) |
| Helsingor to Obertraubling | 488.86 mi (786.74 km) |
| Helsingor to Obertshausen | 441.07 mi (709.84 km) |
| Helsingor to Oberursel | 436.12 mi (701.86 km) |
| Helsingor to Ochsenfurt | 453.72 mi (730.20 km) |
| Helsingor to Ochsenhausen | 561.63 mi (903.86 km) |
| Helsingor to Ochtrup | 343.56 mi (552.91 km) |
| Helsingor to Odenthal | 412.43 mi (663.75 km) |
| Helsingor to Oelde | 342.20 mi (550.72 km) |
| Helsingor to Oelsnitz | 388.69 mi (625.54 km) |
| Helsingor to Oer-Erkenschwick | 373.76 mi (601.51 km) |
| Helsingor to Oerlinghausen | 323.42 mi (520.49 km) |
