| Gretna to Hazleton (Pennsylvania) | 1,097.35 mi (1,766.01 km) |
| Gretna to Healdsburg (California) | 1,955.96 mi (3,147.81 km) |
| Gretna to Heath (Ohio) | 820.20 mi (1,319.98 km) |
| Gretna to Heber (Utah) | 1,404.42 mi (2,260.19 km) |
| Gretna to Helena (Alabama) | 298.60 mi (480.56 km) |
| Gretna to Helena (Montana) | 1,647.53 mi (2,651.45 km) |
| Gretna to Hemet (California) | 1,599.13 mi (2,573.55 km) |
| Gretna to Henderson (Kentucky) | 565.86 mi (910.67 km) |
| Gretna to Henderson (Nevada) | 1,503.85 mi (2,420.21 km) |
| Gretna to Henderson (North Carolina) | 805.23 mi (1,295.89 km) |
| Gretna to Henderson (Texas) | 320.91 mi (516.45 km) |
| Gretna to Hendersonville (North Carolina) | 578.68 mi (931.29 km) |
| Gretna to Hendersonville (Tennessee) | 484.89 mi (780.35 km) |
| Gretna to Hercules (California) | 1,917.64 mi (3,086.14 km) |
| Gretna to Hereford (Texas) | 795.78 mi (1,280.68 km) |
