| Bielefeld to Obernburg am Main | 153.00 mi (246.22 km) |
| Bielefeld to Obernkirchen | 29.98 mi (48.24 km) |
| Bielefeld to Oberschleissheim | 293.06 mi (471.63 km) |
| Bielefeld to Oberstdorf | 327.98 mi (527.84 km) |
| Bielefeld to Obertraubling | 264.60 mi (425.84 km) |
| Bielefeld to Obertshausen | 135.66 mi (218.32 km) |
| Bielefeld to Oberursel | 125.61 mi (202.15 km) |
| Bielefeld to Ochsenfurt | 176.93 mi (284.74 km) |
| Bielefeld to Ochsenhausen | 279.94 mi (450.52 km) |
| Bielefeld to Ochtrup | 58.45 mi (94.07 km) |
| Bielefeld to Odenthal | 91.50 mi (147.26 km) |
| Bielefeld to Oelde | 20.91 mi (33.64 km) |
| Bielefeld to Oelsnitz | 192.30 mi (309.48 km) |
| Bielefeld to Oer-Erkenschwick | 60.75 mi (97.77 km) |
| Bielefeld to Oerlinghausen | 6.76 mi (10.88 km) |
