| Opelika to Carlsbad (California) | 1,844.18 mi (2,967.91 km) |
| Opelika to Carlsbad (New Mexico) | 1,097.45 mi (1,766.18 km) |
| Opelika to Carmel (Indiana) | 506.45 mi (815.05 km) |
| Opelika to Carmichael (California) | 2,046.59 mi (3,293.67 km) |
| Opelika to Carney (Maryland) | 678.91 mi (1,092.60 km) |
| Opelika to Carnot-Moon (Pennsylvania) | 613.43 mi (987.22 km) |
| Opelika to Carol Stream (Illinois) | 657.15 mi (1,057.59 km) |
| Opelika to Carolina (Puerto Rico) | 1,554.78 mi (2,502.17 km) |
| Opelika to Carolina Forest (South Carolina) | 381.29 mi (613.62 km) |
| Opelika to Carpentersville (Illinois) | 672.88 mi (1,082.89 km) |
| Opelika to Carpinteria (California) | 1,960.47 mi (3,155.08 km) |
| Opelika to Carrboro (North Carolina) | 423.83 mi (682.09 km) |
| Opelika to Carroll (Iowa) | 831.95 mi (1,338.89 km) |
| Opelika to Carrollton (Georgia) | 65.83 mi (105.94 km) |
| Opelika to Carrollton (Texas) | 669.09 mi (1,076.79 km) |
