| Fort Thomas to Olivares | 4,108.72 mi (6,612.34 km) |
| Fort Thomas to Olivenza | 4,022.32 mi (6,473.29 km) |
| Fort Thomas to Olot | 4,352.79 mi (7,005.14 km) |
| Fort Thomas to Onate | 4,105.12 mi (6,606.55 km) |
| Fort Thomas to Onda | 4,303.12 mi (6,925.21 km) |
| Fort Thomas to Onteniente | 4,325.89 mi (6,961.85 km) |
| Fort Thomas to Orihuela | 4,335.16 mi (6,976.77 km) |
| Fort Thomas to Osuna | 4,165.52 mi (6,703.75 km) |
| Fort Thomas to Ourense | 3,876.54 mi (6,238.68 km) |
| Fort Thomas to Oviedo | 3,939.85 mi (6,340.58 km) |
| Fort Thomas to Paiporta | 4,314.08 mi (6,942.84 km) |
| Fort Thomas to Pajara | 4,011.41 mi (6,455.75 km) |
| Fort Thomas to Palafolls | 4,382.04 mi (7,052.21 km) |
| Fort Thomas to Palafrugell | 4,391.90 mi (7,068.07 km) |
| Fort Thomas to Palamos | 4,392.85 mi (7,069.60 km) |
