| Louisville to Oberkirch | 4,462.41 mi (7,181.56 km) |
| Louisville to Obernburg am Main | 4,459.10 mi (7,176.22 km) |
| Louisville to Obernkirchen | 4,376.21 mi (7,042.83 km) |
| Louisville to Oberschleissheim | 4,609.71 mi (7,418.61 km) |
| Louisville to Oberstdorf | 4,589.35 mi (7,385.84 km) |
| Louisville to Obertraubling | 4,606.83 mi (7,413.97 km) |
| Louisville to Obertshausen | 4,439.44 mi (7,144.59 km) |
| Louisville to Oberursel | 4,424.92 mi (7,121.22 km) |
| Louisville to Ochsenfurt | 4,501.42 mi (7,244.33 km) |
| Louisville to Ochsenhausen | 4,552.47 mi (7,326.49 km) |
| Louisville to Ochtrup | 4,306.28 mi (6,930.28 km) |
| Louisville to Odenthal | 4,341.24 mi (6,986.55 km) |
| Louisville to Oelde | 4,354.38 mi (7,007.69 km) |
| Louisville to Oelsnitz | 4,554.13 mi (7,329.16 km) |
| Louisville to Oer-Erkenschwick | 4,326.65 mi (6,963.07 km) |
