| Opelousas to Castle Pines (Colorado) | 949.73 mi (1,528.44 km) |
| Opelousas to Castle Rock (Colorado) | 945.45 mi (1,521.55 km) |
| Opelousas to Castro Valley (California) | 1,776.75 mi (2,859.40 km) |
| Opelousas to Catalina Foothills (Arizona) | 1,114.03 mi (1,792.85 km) |
| Opelousas to Cataño (Puerto Rico) | 1,825.83 mi (2,938.39 km) |
| Opelousas to Cathedral City (California) | 1,440.62 mi (2,318.45 km) |
| Opelousas to Catonsville (Maryland) | 1,056.02 mi (1,699.49 km) |
| Opelousas to Cave Spring (Virginia) | 832.00 mi (1,338.98 km) |
| Opelousas to Cayce (South Carolina) | 686.61 mi (1,104.98 km) |
| Opelousas to Cayey (Puerto Rico) | 1,836.73 mi (2,955.93 km) |
| Opelousas to Cedar City (Utah) | 1,296.28 mi (2,086.16 km) |
| Opelousas to Cedar Falls (Iowa) | 828.98 mi (1,334.12 km) |
| Opelousas to Cedar Hill (Texas) | 320.34 mi (515.53 km) |
| Opelousas to Cedar Lake (Indiana) | 792.67 mi (1,275.67 km) |
| Opelousas to Cedar Mill (Oregon) | 1,949.18 mi (3,136.90 km) |
