| Waltrop to Oberkirch | 215.29 mi (346.47 km) |
| Waltrop to Obernburg am Main | 144.84 mi (233.10 km) |
| Waltrop to Obernkirchen | 86.44 mi (139.12 km) |
| Waltrop to Oberschleissheim | 297.77 mi (479.21 km) |
| Waltrop to Oberstdorf | 318.32 mi (512.29 km) |
| Waltrop to Obertraubling | 279.43 mi (449.69 km) |
| Waltrop to Obertshausen | 124.38 mi (200.17 km) |
| Waltrop to Oberursel | 110.63 mi (178.05 km) |
| Waltrop to Ochsenfurt | 179.68 mi (289.17 km) |
| Waltrop to Ochsenhausen | 270.21 mi (434.86 km) |
| Waltrop to Ochtrup | 41.51 mi (66.81 km) |
| Waltrop to Odenthal | 41.92 mi (67.46 km) |
| Waltrop to Oelde | 36.07 mi (58.04 km) |
| Waltrop to Oelsnitz | 223.78 mi (360.15 km) |
| Waltrop to Oer-Erkenschwick | 5.95 mi (9.58 km) |
