| Omaha to Oberkirch | 4,706.77 mi (7,574.81 km) |
| Omaha to Obernburg am Main | 4,688.24 mi (7,545.00 km) |
| Omaha to Obernkirchen | 4,584.13 mi (7,377.44 km) |
| Omaha to Oberschleissheim | 4,842.84 mi (7,793.79 km) |
| Omaha to Oberstdorf | 4,834.55 mi (7,780.46 km) |
| Omaha to Obertraubling | 4,831.62 mi (7,775.75 km) |
| Omaha to Obertshausen | 4,667.79 mi (7,512.08 km) |
| Omaha to Oberursel | 4,653.03 mi (7,488.32 km) |
| Omaha to Ochsenfurt | 4,728.68 mi (7,610.07 km) |
| Omaha to Ochsenhausen | 4,793.50 mi (7,714.39 km) |
| Omaha to Ochtrup | 4,521.55 mi (7,276.73 km) |
| Omaha to Odenthal | 4,567.34 mi (7,350.43 km) |
| Omaha to Oelde | 4,569.63 mi (7,354.12 km) |
| Omaha to Oelsnitz | 4,766.76 mi (7,671.36 km) |
| Omaha to Oer-Erkenschwick | 4,546.81 mi (7,317.38 km) |
