| Opelika to Cadillac (Michigan) | 800.66 mi (1,288.54 km) |
| Opelika to Caguas (Puerto Rico) | 1,560.15 mi (2,510.81 km) |
| Opelika to Cahokia (Illinois) | 488.86 mi (786.74 km) |
| Opelika to Calabasas (California) | 1,914.60 mi (3,081.25 km) |
| Opelika to Caldwell (Idaho) | 1,847.07 mi (2,972.57 km) |
| Opelika to Caledonia (Wisconsin) | 713.52 mi (1,148.30 km) |
| Opelika to Calera (Alabama) | 85.60 mi (137.76 km) |
| Opelika to Calexico (California) | 1,745.66 mi (2,809.36 km) |
| Opelika to Calhoun (Georgia) | 128.92 mi (207.48 km) |
| Opelika to California (Maryland) | 633.00 mi (1,018.71 km) |
| Opelika to California City (California) | 1,863.05 mi (2,998.29 km) |
| Opelika to Callaway (Florida) | 174.87 mi (281.43 km) |
| Opelika to Calumet City (Illinois) | 629.95 mi (1,013.81 km) |
| Opelika to Calverton (Maryland) | 646.01 mi (1,039.66 km) |
| Opelika to Camano (Washington) | 2,196.85 mi (3,535.49 km) |
