| Key Biscayne to Oberkirch | 4,832.03 mi (7,776.41 km) |
| Key Biscayne to Obernburg am Main | 4,852.01 mi (7,808.55 km) |
| Key Biscayne to Obernkirchen | 4,803.91 mi (7,731.15 km) |
| Key Biscayne to Oberschleissheim | 4,990.22 mi (8,030.98 km) |
| Key Biscayne to Oberstdorf | 4,952.18 mi (7,969.76 km) |
| Key Biscayne to Obertraubling | 5,000.02 mi (8,046.75 km) |
| Key Biscayne to Obertshausen | 4,834.40 mi (7,780.22 km) |
| Key Biscayne to Oberursel | 4,820.85 mi (7,758.41 km) |
| Key Biscayne to Ochsenfurt | 4,895.35 mi (7,878.31 km) |
| Key Biscayne to Ochsenhausen | 4,923.32 mi (7,923.32 km) |
| Key Biscayne to Ochtrup | 4,726.30 mi (7,606.25 km) |
| Key Biscayne to Odenthal | 4,743.80 mi (7,634.41 km) |
| Key Biscayne to Oelde | 4,772.36 mi (7,680.37 km) |
| Key Biscayne to Oelsnitz | 4,967.52 mi (7,994.46 km) |
| Key Biscayne to Oer-Erkenschwick | 4,738.63 mi (7,626.09 km) |
