| Vacaville to Oberkirch | 5,698.66 mi (9,171.10 km) |
| Vacaville to Obernburg am Main | 5,655.24 mi (9,101.22 km) |
| Vacaville to Obernkirchen | 5,520.32 mi (8,884.10 km) |
| Vacaville to Oberschleissheim | 5,808.55 mi (9,347.96 km) |
| Vacaville to Oberstdorf | 5,821.46 mi (9,368.73 km) |
| Vacaville to Obertraubling | 5,783.47 mi (9,307.60 km) |
| Vacaville to Obertshausen | 5,634.49 mi (9,067.83 km) |
| Vacaville to Oberursel | 5,620.12 mi (9,044.71 km) |
| Vacaville to Ochsenfurt | 5,690.28 mi (9,157.62 km) |
| Vacaville to Ochsenhausen | 5,775.34 mi (9,294.51 km) |
| Vacaville to Ochtrup | 5,473.92 mi (8,809.43 km) |
| Vacaville to Odenthal | 5,535.63 mi (8,908.73 km) |
| Vacaville to Oelde | 5,519.28 mi (8,882.43 km) |
| Vacaville to Oelsnitz | 5,700.89 mi (9,174.69 km) |
| Vacaville to Oer-Erkenschwick | 5,506.12 mi (8,861.24 km) |
