| Welkenraedt to Obernburg am Main | 151.08 mi (243.14 km) |
| Welkenraedt to Obernkirchen | 175.05 mi (281.72 km) |
| Welkenraedt to Oberschleissheim | 301.36 mi (484.99 km) |
| Welkenraedt to Oberstdorf | 297.43 mi (478.67 km) |
| Welkenraedt to Obertraubling | 299.90 mi (482.64 km) |
| Welkenraedt to Obertshausen | 132.64 mi (213.46 km) |
| Welkenraedt to Oberursel | 118.94 mi (191.41 km) |
| Welkenraedt to Ochsenfurt | 194.24 mi (312.60 km) |
| Welkenraedt to Ochsenhausen | 252.91 mi (407.03 km) |
| Welkenraedt to Ochtrup | 118.96 mi (191.44 km) |
| Welkenraedt to Odenthal | 56.21 mi (90.46 km) |
| Welkenraedt to Oelde | 124.26 mi (199.98 km) |
| Welkenraedt to Oelsnitz | 272.49 mi (438.54 km) |
| Welkenraedt to Oer-Erkenschwick | 87.60 mi (140.98 km) |
| Welkenraedt to Oerlinghausen | 147.27 mi (237.01 km) |
