| Opelousas to Carrollwood (Florida) | 600.93 mi (967.11 km) |
| Opelousas to Carson (California) | 1,543.39 mi (2,483.85 km) |
| Opelousas to Carson City (Nevada) | 1,670.17 mi (2,687.89 km) |
| Opelousas to Carteret (New Jersey) | 1,216.92 mi (1,958.44 km) |
| Opelousas to Cartersville (Georgia) | 493.60 mi (794.38 km) |
| Opelousas to Carthage (Missouri) | 475.43 mi (765.13 km) |
| Opelousas to Cary (Illinois) | 834.96 mi (1,343.74 km) |
| Opelousas to Cary (North Carolina) | 847.77 mi (1,364.35 km) |
| Opelousas to Casa de Oro-Mount Helix (California) | 1,468.64 mi (2,363.54 km) |
| Opelousas to Casa Grande (Arizona) | 1,166.64 mi (1,877.53 km) |
| Opelousas to Casas Adobes (Arizona) | 1,121.53 mi (1,804.93 km) |
| Opelousas to Cascades (Virginia) | 1,018.59 mi (1,639.26 km) |
| Opelousas to Casper (Wyoming) | 1,157.22 mi (1,862.36 km) |
| Opelousas to Casselberry (Florida) | 658.86 mi (1,060.33 km) |
| Opelousas to Castaic (California) | 1,566.38 mi (2,520.84 km) |
