| Annapolis to Oberkirch | 4,054.32 mi (6,524.80 km) |
| Annapolis to Obernburg am Main | 4,059.49 mi (6,533.13 km) |
| Annapolis to Obernkirchen | 3,989.70 mi (6,420.80 km) |
| Annapolis to Oberschleissheim | 4,206.43 mi (6,769.59 km) |
| Annapolis to Oberstdorf | 4,179.63 mi (6,726.46 km) |
| Annapolis to Obertraubling | 4,208.22 mi (6,772.47 km) |
| Annapolis to Obertshausen | 4,040.49 mi (6,502.55 km) |
| Annapolis to Oberursel | 4,026.25 mi (6,479.62 km) |
| Annapolis to Ochsenfurt | 4,102.46 mi (6,602.27 km) |
| Annapolis to Ochsenhausen | 4,145.36 mi (6,671.32 km) |
| Annapolis to Ochtrup | 3,916.24 mi (6,302.58 km) |
| Annapolis to Odenthal | 3,944.58 mi (6,348.18 km) |
| Annapolis to Oelde | 3,963.82 mi (6,379.15 km) |
| Annapolis to Oelsnitz | 4,162.97 mi (6,699.65 km) |
| Annapolis to Oer-Erkenschwick | 3,933.55 mi (6,330.44 km) |
