| Opelika to Nasaud | 5,408.32 mi (8,703.86 km) |
| Opelika to Navodari | 5,693.64 mi (9,163.02 km) |
| Opelika to Negresti-Oas | 5,347.51 mi (8,605.99 km) |
| Opelika to Nehoiu | 5,560.70 mi (8,949.08 km) |
| Opelika to Ocna Mures | 5,423.58 mi (8,728.40 km) |
| Opelika to Odobesti | 5,572.36 mi (8,967.84 km) |
| Opelika to Odorheiu Secuiesc | 5,482.12 mi (8,822.63 km) |
| Opelika to Oltenita | 5,627.09 mi (9,055.93 km) |
| Opelika to Onesti | 5,540.24 mi (8,916.16 km) |
| Opelika to Oradea | 5,321.35 mi (8,563.89 km) |
| Opelika to Orastie | 5,419.61 mi (8,722.03 km) |
| Opelika to Oravita | 5,391.63 mi (8,676.99 km) |
| Opelika to Orsova | 5,432.62 mi (8,742.96 km) |
| Opelika to Otelu Rosu | 5,399.41 mi (8,689.51 km) |
| Opelika to Otopeni | 5,585.35 mi (8,988.76 km) |
