| Gretna to Hermiston (Oregon) | 1,919.70 mi (3,089.46 km) |
| Gretna to Hermitage (Pennsylvania) | 949.13 mi (1,527.47 km) |
| Gretna to Hermosa Beach (California) | 1,679.72 mi (2,703.25 km) |
| Gretna to Hernando (Mississippi) | 341.33 mi (549.32 km) |
| Gretna to Herndon (Virginia) | 953.60 mi (1,534.67 km) |
| Gretna to Herriman (Utah) | 1,433.56 mi (2,307.09 km) |
| Gretna to Herrin (Illinois) | 548.15 mi (882.16 km) |
| Gretna to Hershey (Pennsylvania) | 1,040.67 mi (1,674.79 km) |
| Gretna to Hesperia (California) | 1,619.52 mi (2,606.36 km) |
| Gretna to Hewitt (Texas) | 437.61 mi (704.26 km) |
| Gretna to Hialeah (Florida) | 657.10 mi (1,057.50 km) |
| Gretna to Hialeah Gardens (Florida) | 653.63 mi (1,051.91 km) |
| Gretna to Hibbing (Minnesota) | 1,218.14 mi (1,960.40 km) |
| Gretna to Hickory (North Carolina) | 646.94 mi (1,041.15 km) |
| Gretna to Hickory Hills (Illinois) | 825.68 mi (1,328.81 km) |
