| Westphalia to Oberkirch | 4,073.74 mi (6,556.05 km) |
| Westphalia to Obernburg am Main | 4,078.78 mi (6,564.17 km) |
| Westphalia to Obernkirchen | 4,008.76 mi (6,451.48 km) |
| Westphalia to Oberschleissheim | 4,225.78 mi (6,800.74 km) |
| Westphalia to Oberstdorf | 4,199.07 mi (6,757.75 km) |
| Westphalia to Obertraubling | 4,227.50 mi (6,803.50 km) |
| Westphalia to Obertshausen | 4,059.77 mi (6,533.57 km) |
| Westphalia to Oberursel | 4,045.52 mi (6,510.63 km) |
| Westphalia to Ochsenfurt | 4,121.74 mi (6,633.30 km) |
| Westphalia to Ochsenhausen | 4,164.77 mi (6,702.55 km) |
| Westphalia to Ochtrup | 3,935.36 mi (6,333.35 km) |
| Westphalia to Odenthal | 3,963.81 mi (6,379.14 km) |
| Westphalia to Oelde | 3,982.95 mi (6,409.95 km) |
| Westphalia to Oelsnitz | 4,182.12 mi (6,730.48 km) |
| Westphalia to Oer-Erkenschwick | 3,952.72 mi (6,361.30 km) |
