| Duren to Obernburg am Main | 134.71 mi (216.80 km) |
| Duren to Obernkirchen | 151.93 mi (244.50 km) |
| Duren to Oberschleissheim | 288.02 mi (463.53 km) |
| Duren to Oberstdorf | 290.35 mi (467.28 km) |
| Duren to Obertraubling | 282.89 mi (455.27 km) |
| Duren to Obertshausen | 115.16 mi (185.33 km) |
| Duren to Oberursel | 100.82 mi (162.25 km) |
| Duren to Ochsenfurt | 177.19 mi (285.15 km) |
| Duren to Ochsenhausen | 244.40 mi (393.32 km) |
| Duren to Ochtrup | 101.77 mi (163.78 km) |
| Duren to Odenthal | 31.95 mi (51.43 km) |
| Duren to Oelde | 101.37 mi (163.14 km) |
| Duren to Oelsnitz | 250.54 mi (403.21 km) |
| Duren to Oer-Erkenschwick | 67.00 mi (107.83 km) |
| Duren to Oerlinghausen | 123.94 mi (199.46 km) |
