| Opelika to Olivares | 4,357.76 mi (7,013.13 km) |
| Opelika to Olivenza | 4,277.59 mi (6,884.12 km) |
| Opelika to Olot | 4,651.23 mi (7,485.43 km) |
| Opelika to Onate | 4,398.45 mi (7,078.62 km) |
| Opelika to Onda | 4,582.42 mi (7,374.69 km) |
| Opelika to Onteniente | 4,597.45 mi (7,398.87 km) |
| Opelika to Orihuela | 4,601.37 mi (7,405.18 km) |
| Opelika to Osuna | 4,415.96 mi (7,106.80 km) |
| Opelika to Ourense | 4,154.70 mi (6,686.34 km) |
| Opelika to Oviedo | 4,228.59 mi (6,805.26 km) |
| Opelika to Paiporta | 4,589.77 mi (7,386.52 km) |
| Opelika to Pajara | 4,172.55 mi (6,715.07 km) |
| Opelika to Palafolls | 4,678.13 mi (7,528.71 km) |
| Opelika to Palafrugell | 4,690.29 mi (7,548.29 km) |
| Opelika to Palamos | 4,690.76 mi (7,549.05 km) |
