| Welver to Oberkirch | 213.11 mi (342.97 km) |
| Welver to Obernburg am Main | 133.21 mi (214.39 km) |
| Welver to Obernkirchen | 66.74 mi (107.40 km) |
| Welver to Oberschleissheim | 282.52 mi (454.68 km) |
| Welver to Oberstdorf | 308.72 mi (496.83 km) |
| Welver to Obertraubling | 260.80 mi (419.72 km) |
| Welver to Obertshausen | 113.69 mi (182.97 km) |
| Welver to Oberursel | 101.31 mi (163.04 km) |
| Welver to Ochsenfurt | 164.31 mi (264.43 km) |
| Welver to Ochsenhausen | 260.43 mi (419.12 km) |
| Welver to Ochtrup | 52.22 mi (84.04 km) |
| Welver to Odenthal | 54.27 mi (87.34 km) |
| Welver to Oelde | 17.07 mi (27.47 km) |
| Welver to Oelsnitz | 200.80 mi (323.15 km) |
| Welver to Oer-Erkenschwick | 30.40 mi (48.92 km) |
