| Davenport to Oberkirch | 4,492.77 mi (7,230.42 km) |
| Davenport to Obernburg am Main | 4,479.48 mi (7,209.02 km) |
| Davenport to Obernkirchen | 4,382.62 mi (7,053.14 km) |
| Davenport to Oberschleissheim | 4,633.07 mi (7,456.21 km) |
| Davenport to Oberstdorf | 4,620.58 mi (7,436.11 km) |
| Davenport to Obertraubling | 4,624.76 mi (7,442.83 km) |
| Davenport to Obertshausen | 4,459.25 mi (7,176.47 km) |
| Davenport to Oberursel | 4,444.53 mi (7,152.79 km) |
| Davenport to Ochsenfurt | 4,520.68 mi (7,275.33 km) |
| Davenport to Ochsenhausen | 4,580.87 mi (7,372.19 km) |
| Davenport to Ochtrup | 4,317.24 mi (6,947.92 km) |
| Davenport to Odenthal | 4,359.33 mi (7,015.66 km) |
| Davenport to Oelde | 4,365.46 mi (7,025.53 km) |
| Davenport to Oelsnitz | 4,564.05 mi (7,345.13 km) |
| Davenport to Oer-Erkenschwick | 4,340.83 mi (6,985.89 km) |
