| Bon Air to Oberkirch | 4,163.14 mi (6,699.92 km) |
| Bon Air to Obernburg am Main | 4,169.45 mi (6,710.08 km) |
| Bon Air to Obernkirchen | 4,101.17 mi (6,600.20 km) |
| Bon Air to Oberschleissheim | 4,315.83 mi (6,945.65 km) |
| Bon Air to Oberstdorf | 4,288.14 mi (6,901.09 km) |
| Bon Air to Obertraubling | 4,318.22 mi (6,949.50 km) |
| Bon Air to Obertshausen | 4,150.54 mi (6,679.64 km) |
| Bon Air to Oberursel | 4,136.33 mi (6,656.78 km) |
| Bon Air to Ochsenfurt | 4,212.47 mi (6,779.31 km) |
| Bon Air to Ochsenhausen | 4,254.27 mi (6,846.58 km) |
| Bon Air to Ochtrup | 4,027.38 mi (6,481.44 km) |
| Bon Air to Odenthal | 4,054.95 mi (6,525.81 km) |
| Bon Air to Oelde | 4,074.88 mi (6,557.89 km) |
| Bon Air to Oelsnitz | 4,273.87 mi (6,878.12 km) |
| Bon Air to Oer-Erkenschwick | 4,044.34 mi (6,508.74 km) |
