| Opelika to Oakleaf Plantation (Florida) | 270.71 mi (435.67 km) |
| Opelika to Oakley (California) | 2,066.76 mi (3,326.13 km) |
| Opelika to Oakton (Virginia) | 624.04 mi (1,004.29 km) |
| Opelika to Oakville (Missouri) | 486.70 mi (783.27 km) |
| Opelika to Oatfield (Oregon) | 2,158.64 mi (3,474.00 km) |
| Opelika to Ocala (Florida) | 307.33 mi (494.61 km) |
| Opelika to Ocean Acres (New Jersey) | 787.71 mi (1,267.69 km) |
| Opelika to Ocean City (New Jersey) | 755.02 mi (1,215.09 km) |
| Opelika to Ocean Pines (Maryland) | 697.30 mi (1,122.20 km) |
| Opelika to Ocean Pointe (Hawaii) | 4,458.68 mi (7,175.55 km) |
| Opelika to Ocean Springs (Mississippi) | 254.02 mi (408.80 km) |
| Opelika to Oceanside (California) | 1,844.67 mi (2,968.71 km) |
| Opelika to Oceanside (New York) | 851.24 mi (1,369.94 km) |
| Opelika to Ocoee (Florida) | 362.92 mi (584.06 km) |
| Opelika to Oconomowoc (Wisconsin) | 740.84 mi (1,192.27 km) |
