| Opelousas to Cibolo (Texas) | 372.55 mi (599.56 km) |
| Opelousas to Cicero (Illinois) | 818.08 mi (1,316.58 km) |
| Opelousas to Cimarron Hills (Colorado) | 917.91 mi (1,477.23 km) |
| Opelousas to Cincinnati (Ohio) | 733.51 mi (1,180.48 km) |
| Opelousas to Cinco Ranch (Texas) | 226.44 mi (364.42 km) |
| Opelousas to Circleville (Ohio) | 812.26 mi (1,307.20 km) |
| Opelousas to Citrus (California) | 1,522.97 mi (2,450.99 km) |
| Opelousas to Citrus Heights (California) | 1,745.32 mi (2,808.82 km) |
| Opelousas to Citrus Park (Florida) | 597.82 mi (962.10 km) |
| Opelousas to Claiborne (Louisiana) | 139.23 mi (224.07 km) |
| Opelousas to Claremont (California) | 1,513.07 mi (2,435.04 km) |
| Opelousas to Claremont (New Hampshire) | 1,399.83 mi (2,252.81 km) |
| Opelousas to Claremore (Oklahoma) | 448.68 mi (722.08 km) |
| Opelousas to Clarksburg (Maryland) | 1,030.51 mi (1,658.45 km) |
| Opelousas to Clarksburg (West Virginia) | 898.71 mi (1,446.34 km) |
