| Opelika to Noventa Vicentina | 4,961.38 mi (7,984.57 km) |
| Opelika to Novi di Modena | 4,946.97 mi (7,961.37 km) |
| Opelika to Novi Ligure | 4,859.31 mi (7,820.31 km) |
| Opelika to Nuoro | 5,026.87 mi (8,089.96 km) |
| Opelika to Occhiobello | 4,975.34 mi (8,007.04 km) |
| Opelika to Oderzo | 4,985.69 mi (8,023.70 km) |
| Opelika to Oggiono | 4,851.75 mi (7,808.14 km) |
| Opelika to Olbia | 5,014.77 mi (8,070.50 km) |
| Opelika to Oleggio | 4,826.56 mi (7,767.59 km) |
| Opelika to Olgiate Comasco | 4,835.27 mi (7,781.61 km) |
| Opelika to Olgiate Olona | 4,836.33 mi (7,783.32 km) |
| Opelika to Omegna | 4,808.23 mi (7,738.09 km) |
| Opelika to Opera | 4,858.53 mi (7,819.05 km) |
| Opelika to Oppeano | 4,945.85 mi (7,959.58 km) |
| Opelika to Orbassano | 4,796.96 mi (7,719.96 km) |
