| Gretna to Haines City (Florida) | 524.54 mi (844.16 km) |
| Gretna to Halawa (Hawaii) | 4,209.96 mi (6,775.27 km) |
| Gretna to Half Moon Bay (California) | 1,923.19 mi (3,095.08 km) |
| Gretna to Halfway (Maryland) | 965.52 mi (1,553.85 km) |
| Gretna to Hallandale Beach (Florida) | 662.47 mi (1,066.14 km) |
| Gretna to Haltom City (Texas) | 470.76 mi (757.61 km) |
| Gretna to Ham Lake (Minnesota) | 1,073.92 mi (1,728.31 km) |
| Gretna to Hamilton (Ohio) | 725.29 mi (1,167.24 km) |
| Gretna to Hamilton Square (New Jersey) | 1,122.34 mi (1,806.23 km) |
| Gretna to Hammond (Indiana) | 821.38 mi (1,321.89 km) |
| Gretna to Hammond (Louisiana) | 47.75 mi (76.84 km) |
| Gretna to Hammonton (New Jersey) | 1,095.38 mi (1,762.85 km) |
| Gretna to Hampton (Virginia) | 929.09 mi (1,495.22 km) |
| Gretna to Hampton Bays (New York) | 1,240.24 mi (1,995.97 km) |
| Gretna to Hamtramck (Michigan) | 945.96 mi (1,522.38 km) |
