| Fort Thomas to Opole | 4,666.42 mi (7,509.87 km) |
| Fort Thomas to Orzesze | 4,716.38 mi (7,590.28 km) |
| Fort Thomas to Osowa | 4,538.33 mi (7,303.73 km) |
| Fort Thomas to Ostroda | 4,616.77 mi (7,429.98 km) |
| Fort Thomas to Ostroleka | 4,695.85 mi (7,557.24 km) |
| Fort Thomas to Ostrow Mazowiecka | 4,717.97 mi (7,592.84 km) |
| Fort Thomas to Ostrow Wielkopolski | 4,623.63 mi (7,441.01 km) |
| Fort Thomas to Ostrowiec Swietokrzyski | 4,778.22 mi (7,689.80 km) |
| Fort Thomas to Ostrzeszow | 4,636.88 mi (7,462.34 km) |
| Fort Thomas to Oswiecim | 4,737.86 mi (7,624.85 km) |
| Fort Thomas to Otwock | 4,724.72 mi (7,603.70 km) |
| Fort Thomas to Ozarow Mazowiecki | 4,704.69 mi (7,571.47 km) |
| Fort Thomas to Ozimek | 4,676.20 mi (7,525.62 km) |
| Fort Thomas to Ozorkow | 4,662.51 mi (7,503.59 km) |
| Fort Thomas to Pabianice | 4,678.66 mi (7,529.58 km) |
