| Gretna to Waimea (Hawaii) | 4,112.23 mi (6,618.00 km) |
| Gretna to Waipahu (Hawaii) | 4,215.08 mi (6,783.52 km) |
| Gretna to Waipio (Hawaii) | 4,213.51 mi (6,780.99 km) |
| Gretna to Wake Forest (North Carolina) | 788.12 mi (1,268.36 km) |
| Gretna to Wakefield (Virginia) | 953.82 mi (1,535.02 km) |
| Gretna to Waldorf (Maryland) | 959.27 mi (1,543.80 km) |
| Gretna to Walker (Michigan) | 934.23 mi (1,503.49 km) |
| Gretna to Walker Mill (Maryland) | 971.43 mi (1,563.36 km) |
| Gretna to Walla Walla (Washington) | 1,885.58 mi (3,034.55 km) |
| Gretna to Wallingford Center (Connecticut) | 1,249.25 mi (2,010.47 km) |
| Gretna to Wallington (New Jersey) | 1,170.71 mi (1,884.07 km) |
| Gretna to Walnut (California) | 1,649.35 mi (2,654.37 km) |
| Gretna to Walnut Creek (California) | 1,905.03 mi (3,065.86 km) |
| Gretna to Walnut Park (California) | 1,669.95 mi (2,687.52 km) |
| Gretna to Waltham (Massachusetts) | 1,352.70 mi (2,176.96 km) |
