| Willich to Oberkirch | 200.58 mi (322.80 km) |
| Willich to Obernburg am Main | 150.38 mi (242.01 km) |
| Willich to Obernkirchen | 129.87 mi (209.01 km) |
| Willich to Oberschleissheim | 305.65 mi (491.90 km) |
| Willich to Oberstdorf | 314.69 mi (506.44 km) |
| Willich to Obertraubling | 295.08 mi (474.89 km) |
| Willich to Obertshausen | 129.76 mi (208.82 km) |
| Willich to Oberursel | 114.99 mi (185.06 km) |
| Willich to Ochsenfurt | 190.66 mi (306.84 km) |
| Willich to Ochsenhausen | 267.72 mi (430.85 km) |
| Willich to Ochtrup | 70.66 mi (113.72 km) |
| Willich to Odenthal | 29.28 mi (47.12 km) |
| Willich to Oelde | 79.26 mi (127.56 km) |
| Willich to Oelsnitz | 251.91 mi (405.41 km) |
| Willich to Oer-Erkenschwick | 39.98 mi (64.35 km) |
