| Louisville to Nasaud | 5,131.51 mi (8,258.37 km) |
| Louisville to Navodari | 5,418.79 mi (8,720.69 km) |
| Louisville to Negresti-Oas | 5,070.42 mi (8,160.05 km) |
| Louisville to Nehoiu | 5,287.12 mi (8,508.79 km) |
| Louisville to Ocna Mures | 5,151.19 mi (8,290.04 km) |
| Louisville to Odobesti | 5,295.69 mi (8,522.59 km) |
| Louisville to Odorheiu Secuiesc | 5,207.10 mi (8,380.02 km) |
| Louisville to Oltenita | 5,357.42 mi (8,621.93 km) |
| Louisville to Onesti | 5,262.43 mi (8,469.06 km) |
| Louisville to Oradea | 5,050.20 mi (8,127.52 km) |
| Louisville to Orastie | 5,150.63 mi (8,289.13 km) |
| Louisville to Oravita | 5,128.94 mi (8,254.23 km) |
| Louisville to Orsova | 5,169.68 mi (8,319.80 km) |
| Louisville to Otelu Rosu | 5,133.45 mi (8,261.48 km) |
| Louisville to Otopeni | 5,315.21 mi (8,554.01 km) |
