| Dillenburg to Obernburg am Main | 72.42 mi (116.55 km) |
| Dillenburg to Obernkirchen | 111.84 mi (179.99 km) |
| Dillenburg to Oberschleissheim | 226.13 mi (363.92 km) |
| Dillenburg to Oberstdorf | 246.75 mi (397.10 km) |
| Dillenburg to Obertraubling | 211.73 mi (340.75 km) |
| Dillenburg to Obertshausen | 52.04 mi (83.75 km) |
| Dillenburg to Oberursel | 38.83 mi (62.49 km) |
| Dillenburg to Ochsenfurt | 108.74 mi (175.00 km) |
| Dillenburg to Ochsenhausen | 198.50 mi (319.46 km) |
| Dillenburg to Ochtrup | 112.07 mi (180.37 km) |
| Dillenburg to Odenthal | 54.91 mi (88.38 km) |
| Dillenburg to Oelde | 76.22 mi (122.67 km) |
| Dillenburg to Oelsnitz | 171.78 mi (276.45 km) |
| Dillenburg to Oer-Erkenschwick | 77.09 mi (124.06 km) |
| Dillenburg to Oerlinghausen | 86.81 mi (139.71 km) |
