| Gretna to Grand Junction (Colorado) | 1,226.72 mi (1,974.21 km) |
| Gretna to Grand Prairie (Texas) | 453.85 mi (730.41 km) |
| Gretna to Grand Rapids (Michigan) | 933.93 mi (1,503.02 km) |
| Gretna to Grand Rapids (Minnesota) | 1,211.59 mi (1,949.87 km) |
| Gretna to Grand Terrace (California) | 1,618.10 mi (2,604.08 km) |
| Gretna to Grandview (Missouri) | 669.90 mi (1,078.11 km) |
| Gretna to Grandview (Washington) | 1,958.77 mi (3,152.33 km) |
| Gretna to Grandville (Michigan) | 928.43 mi (1,494.16 km) |
| Gretna to Granger (Indiana) | 845.87 mi (1,361.30 km) |
| Gretna to Granite Bay (California) | 1,867.13 mi (3,004.85 km) |
| Gretna to Granite City (Illinois) | 609.38 mi (980.71 km) |
| Gretna to Grants Pass (Oregon) | 2,030.76 mi (3,268.20 km) |
| Gretna to Grantsville (Utah) | 1,459.18 mi (2,348.32 km) |
| Gretna to Grapevine (Texas) | 463.64 mi (746.16 km) |
| Gretna to Grass Valley (California) | 1,866.44 mi (3,003.75 km) |
