| Gretna to Fort Madison (Iowa) | 743.63 mi (1,196.75 km) |
| Gretna to Fort Meade (Maryland) | 986.91 mi (1,588.28 km) |
| Gretna to Fort Mill (South Carolina) | 636.89 mi (1,024.98 km) |
| Gretna to Fort Mohave (Arizona) | 1,468.27 mi (2,362.95 km) |
| Gretna to Fort Morgan (Colorado) | 1,053.17 mi (1,694.91 km) |
| Gretna to Fort Myers (Florida) | 549.34 mi (884.08 km) |
| Gretna to Fort Oglethorpe (Georgia) | 445.89 mi (717.59 km) |
| Gretna to Fort Payne (Alabama) | 404.25 mi (650.58 km) |
| Gretna to Fort Pierce (Florida) | 612.84 mi (986.28 km) |
| Gretna to Fort Smith (Arkansas) | 451.95 mi (727.35 km) |
| Gretna to Fort Thomas (Kentucky) | 708.91 mi (1,140.89 km) |
| Gretna to Fort Walton Beach (Florida) | 207.91 mi (334.60 km) |
| Gretna to Fort Washington (Maryland) | 960.40 mi (1,545.62 km) |
| Gretna to Fort Wayne (Indiana) | 819.85 mi (1,319.41 km) |
| Gretna to Fort Worth (Texas) | 473.88 mi (762.64 km) |
