| Council Bluffs to Oberkirch | 4,700.81 mi (7,565.23 km) |
| Council Bluffs to Obernburg am Main | 4,682.53 mi (7,535.81 km) |
| Council Bluffs to Obernkirchen | 4,578.74 mi (7,368.77 km) |
| Council Bluffs to Oberschleissheim | 4,837.09 mi (7,784.54 km) |
| Council Bluffs to Oberstdorf | 4,828.61 mi (7,770.89 km) |
| Council Bluffs to Obertraubling | 4,826.01 mi (7,766.71 km) |
| Council Bluffs to Obertshausen | 4,662.08 mi (7,502.90 km) |
| Council Bluffs to Oberursel | 4,647.32 mi (7,479.15 km) |
| Council Bluffs to Ochsenfurt | 4,723.00 mi (7,600.94 km) |
| Council Bluffs to Ochsenhausen | 4,787.61 mi (7,704.92 km) |
| Council Bluffs to Ochtrup | 4,516.03 mi (7,267.85 km) |
| Council Bluffs to Odenthal | 4,561.66 mi (7,341.28 km) |
| Council Bluffs to Oelde | 4,564.12 mi (7,345.25 km) |
| Council Bluffs to Oelsnitz | 4,761.33 mi (7,662.62 km) |
| Council Bluffs to Oer-Erkenschwick | 4,541.22 mi (7,308.38 km) |
