| Opelousas to Oakleaf Plantation (Florida) | 611.33 mi (983.84 km) |
| Opelousas to Oakley (California) | 1,759.50 mi (2,831.64 km) |
| Opelousas to Oakton (Virginia) | 1,017.03 mi (1,636.76 km) |
| Opelousas to Oakville (Missouri) | 556.49 mi (895.58 km) |
| Opelousas to Oatfield (Oregon) | 1,936.76 mi (3,116.91 km) |
| Opelousas to Ocala (Florida) | 602.12 mi (969.02 km) |
| Opelousas to Ocean Acres (New Jersey) | 1,187.10 mi (1,910.46 km) |
| Opelousas to Ocean City (New Jersey) | 1,157.11 mi (1,862.20 km) |
| Opelousas to Ocean Pines (Maryland) | 1,104.48 mi (1,777.48 km) |
| Opelousas to Ocean Pointe (Hawaii) | 4,091.92 mi (6,585.32 km) |
| Opelousas to Ocean Springs (Mississippi) | 196.42 mi (316.10 km) |
| Opelousas to Oceanside (California) | 1,488.22 mi (2,395.05 km) |
| Opelousas to Oceanside (New York) | 1,245.73 mi (2,004.81 km) |
| Opelousas to Ocoee (Florida) | 647.83 mi (1,042.58 km) |
| Opelousas to Oconomowoc (Wisconsin) | 890.93 mi (1,433.82 km) |
