| Louisville to Opole | 4,756.53 mi (7,654.89 km) |
| Louisville to Orzesze | 4,806.51 mi (7,735.33 km) |
| Louisville to Osowa | 4,627.88 mi (7,447.85 km) |
| Louisville to Ostroda | 4,706.35 mi (7,574.13 km) |
| Louisville to Ostroleka | 4,785.41 mi (7,701.37 km) |
| Louisville to Ostrow Mazowiecka | 4,807.56 mi (7,737.01 km) |
| Louisville to Ostrow Wielkopolski | 4,713.64 mi (7,585.88 km) |
| Louisville to Ostrowiec Swietokrzyski | 4,868.12 mi (7,834.48 km) |
| Louisville to Ostrzeszow | 4,726.92 mi (7,607.24 km) |
| Louisville to Oswiecim | 4,827.98 mi (7,769.88 km) |
| Louisville to Otwock | 4,814.46 mi (7,748.13 km) |
| Louisville to Ozarow Mazowiecki | 4,794.45 mi (7,715.93 km) |
| Louisville to Ozimek | 4,766.30 mi (7,670.63 km) |
| Louisville to Ozorkow | 4,752.40 mi (7,648.26 km) |
| Louisville to Pabianice | 4,768.59 mi (7,674.30 km) |
