| Gretna to Haverhill (Massachusetts) | 1,374.44 mi (2,211.94 km) |
| Gretna to Havre de Grace (Maryland) | 1,032.06 mi (1,660.93 km) |
| Gretna to Hawaiian Gardens (California) | 1,661.10 mi (2,673.29 km) |
| Gretna to Hawaiian Paradise Park (Hawaii) | 4,084.40 mi (6,573.21 km) |
| Gretna to Hawthorne (California) | 1,677.03 mi (2,698.92 km) |
| Gretna to Hawthorne (New Jersey) | 1,172.70 mi (1,887.27 km) |
| Gretna to Hayden (Idaho) | 1,878.99 mi (3,023.94 km) |
| Gretna to Hayesville (Oregon) | 2,063.91 mi (3,321.54 km) |
| Gretna to Hays (Kansas) | 813.67 mi (1,309.48 km) |
| Gretna to Haysville (Kansas) | 674.55 mi (1,085.59 km) |
| Gretna to Hayward (California) | 1,904.77 mi (3,065.43 km) |
| Gretna to Hazel Crest (Illinois) | 816.56 mi (1,314.12 km) |
| Gretna to Hazel Dell (Washington) | 2,065.64 mi (3,324.33 km) |
| Gretna to Hazel Park (Michigan) | 949.13 mi (1,527.48 km) |
| Gretna to Hazelwood (Missouri) | 614.06 mi (988.23 km) |
