| Opelousas to Oak Grove (South Carolina) | 681.58 mi (1,096.90 km) |
| Opelousas to Oak Harbor (Washington) | 2,019.13 mi (3,249.48 km) |
| Opelousas to Oak Hills (Oregon) | 1,951.14 mi (3,140.06 km) |
| Opelousas to Oak Lawn (Illinois) | 809.63 mi (1,302.98 km) |
| Opelousas to Oak Park (California) | 1,573.30 mi (2,531.98 km) |
| Opelousas to Oak Park (Illinois) | 820.39 mi (1,320.28 km) |
| Opelousas to Oak Park (Michigan) | 960.40 mi (1,545.61 km) |
| Opelousas to Oak Ridge (Florida) | 656.54 mi (1,056.60 km) |
| Opelousas to Oak Ridge (New Jersey) | 1,220.25 mi (1,963.80 km) |
| Opelousas to Oak Ridge (Tennessee) | 585.91 mi (942.92 km) |
| Opelousas to Oakdale (California) | 1,711.42 mi (2,754.27 km) |
| Opelousas to Oakdale (Minnesota) | 1,000.40 mi (1,609.99 km) |
| Opelousas to Oakland (California) | 1,785.80 mi (2,873.97 km) |
| Opelousas to Oakland (New Jersey) | 1,231.70 mi (1,982.23 km) |
| Opelousas to Oakland Park (Florida) | 784.49 mi (1,262.52 km) |
