| Oldenzaal to Oberkirch | 266.25 mi (428.49 km) |
| Oldenzaal to Obernburg am Main | 196.12 mi (315.62 km) |
| Oldenzaal to Obernkirchen | 92.38 mi (148.67 km) |
| Oldenzaal to Oberschleissheim | 347.40 mi (559.09 km) |
| Oldenzaal to Oberstdorf | 370.25 mi (595.85 km) |
| Oldenzaal to Obertraubling | 325.71 mi (524.18 km) |
| Oldenzaal to Obertshausen | 175.87 mi (283.04 km) |
| Oldenzaal to Oberursel | 162.39 mi (261.34 km) |
| Oldenzaal to Ochsenfurt | 229.14 mi (368.76 km) |
| Oldenzaal to Ochsenhausen | 322.09 mi (518.35 km) |
| Oldenzaal to Ochtrup | 13.31 mi (21.41 km) |
| Oldenzaal to Odenthal | 89.02 mi (143.27 km) |
| Oldenzaal to Oelde | 61.52 mi (99.01 km) |
| Oldenzaal to Oelsnitz | 261.06 mi (420.13 km) |
| Oldenzaal to Oer-Erkenschwick | 48.52 mi (78.09 km) |
