| Gretna to Oak Harbor (Washington) | 2,133.96 mi (3,434.28 km) |
| Gretna to Oak Hills (Oregon) | 2,070.75 mi (3,332.56 km) |
| Gretna to Oak Lawn (Illinois) | 825.58 mi (1,328.64 km) |
| Gretna to Oak Park (California) | 1,701.62 mi (2,738.50 km) |
| Gretna to Oak Park (Illinois) | 837.07 mi (1,347.14 km) |
| Gretna to Oak Park (Michigan) | 947.42 mi (1,524.73 km) |
| Gretna to Oak Ridge (Florida) | 530.07 mi (853.06 km) |
| Gretna to Oak Ridge (New Jersey) | 1,161.43 mi (1,869.15 km) |
| Gretna to Oak Ridge (Tennessee) | 534.95 mi (860.91 km) |
| Gretna to Oakdale (California) | 1,839.21 mi (2,959.93 km) |
| Gretna to Oakdale (Minnesota) | 1,053.74 mi (1,695.83 km) |
| Gretna to Oakland (California) | 1,913.65 mi (3,079.73 km) |
| Gretna to Oakland (New Jersey) | 1,172.17 mi (1,886.42 km) |
| Gretna to Oakland Park (Florida) | 656.07 mi (1,055.84 km) |
| Gretna to Oakleaf Plantation (Florida) | 491.75 mi (791.39 km) |
