| Opelousas to Cadillac (Michigan) | 1,015.49 mi (1,634.28 km) |
| Opelousas to Caguas (Puerto Rico) | 1,839.25 mi (2,959.99 km) |
| Opelousas to Cahokia (Illinois) | 565.91 mi (910.74 km) |
| Opelousas to Calabasas (California) | 1,567.60 mi (2,522.80 km) |
| Opelousas to Caldwell (Idaho) | 1,620.11 mi (2,607.32 km) |
| Opelousas to Caledonia (Wisconsin) | 879.14 mi (1,414.84 km) |
| Opelousas to Calera (Alabama) | 361.07 mi (581.09 km) |
| Opelousas to Calexico (California) | 1,382.97 mi (2,225.68 km) |
| Opelousas to Calhoun (Georgia) | 498.09 mi (801.59 km) |
| Opelousas to California (Maryland) | 1,035.98 mi (1,667.25 km) |
| Opelousas to California City (California) | 1,526.40 mi (2,456.50 km) |
| Opelousas to Callaway (Florida) | 389.99 mi (627.64 km) |
| Opelousas to Calumet City (Illinois) | 806.50 mi (1,297.94 km) |
| Opelousas to Calverton (Maryland) | 1,039.29 mi (1,672.57 km) |
| Opelousas to Camano (Washington) | 2,009.07 mi (3,233.28 km) |
