| West Sacramento to Oberkirch | 5,675.40 mi (9,133.68 km) |
| West Sacramento to Obernburg am Main | 5,632.28 mi (9,064.28 km) |
| West Sacramento to Obernkirchen | 5,497.70 mi (8,847.70 km) |
| West Sacramento to Oberschleissheim | 5,785.68 mi (9,311.15 km) |
| West Sacramento to Oberstdorf | 5,798.32 mi (9,331.49 km) |
| West Sacramento to Obertraubling | 5,760.77 mi (9,271.06 km) |
| West Sacramento to Obertshausen | 5,611.53 mi (9,030.88 km) |
| West Sacramento to Oberursel | 5,597.15 mi (9,007.74 km) |
| West Sacramento to Ochsenfurt | 5,667.41 mi (9,120.81 km) |
| West Sacramento to Ochsenhausen | 5,752.25 mi (9,257.34 km) |
| West Sacramento to Ochtrup | 5,451.08 mi (8,772.66 km) |
| West Sacramento to Odenthal | 5,512.60 mi (8,871.68 km) |
| West Sacramento to Oelde | 5,496.49 mi (8,845.75 km) |
| West Sacramento to Oelsnitz | 5,678.38 mi (9,138.47 km) |
| West Sacramento to Oer-Erkenschwick | 5,483.19 mi (8,824.35 km) |
