| Willowbrook to Oberkirch | 5,850.82 mi (9,415.98 km) |
| Willowbrook to Obernburg am Main | 5,815.45 mi (9,359.06 km) |
| Willowbrook to Obernkirchen | 5,689.43 mi (9,156.26 km) |
| Willowbrook to Oberschleissheim | 5,970.33 mi (9,608.31 km) |
| Willowbrook to Oberstdorf | 5,976.21 mi (9,617.78 km) |
| Willowbrook to Obertraubling | 5,949.60 mi (9,574.96 km) |
| Willowbrook to Obertshausen | 5,794.64 mi (9,325.57 km) |
| Willowbrook to Oberursel | 5,780.04 mi (9,302.07 km) |
| Willowbrook to Ochsenfurt | 5,852.53 mi (9,418.74 km) |
| Willowbrook to Ochsenhausen | 5,931.48 mi (9,545.79 km) |
| Willowbrook to Ochtrup | 5,637.51 mi (9,072.70 km) |
| Willowbrook to Odenthal | 5,694.51 mi (9,164.43 km) |
| Willowbrook to Oelde | 5,684.10 mi (9,147.68 km) |
| Willowbrook to Oelsnitz | 5,872.06 mi (9,450.17 km) |
| Willowbrook to Oer-Erkenschwick | 5,667.71 mi (9,121.30 km) |
