| Gretna to Gonzales (Louisiana) | 56.19 mi (90.42 km) |
| Gretna to Gonzalez (Florida) | 171.20 mi (275.53 km) |
| Gretna to Goodlettsville (Tennessee) | 484.15 mi (779.16 km) |
| Gretna to Goodyear (Arizona) | 1,330.75 mi (2,141.64 km) |
| Gretna to Goose Creek (South Carolina) | 628.94 mi (1,012.18 km) |
| Gretna to Goshen (Indiana) | 839.66 mi (1,351.30 km) |
| Gretna to Goulds (Florida) | 662.60 mi (1,066.35 km) |
| Gretna to Grafton (Wisconsin) | 933.79 mi (1,502.79 km) |
| Gretna to Graham (North Carolina) | 749.12 mi (1,205.59 km) |
| Gretna to Graham (Washington) | 2,083.76 mi (3,353.48 km) |
| Gretna to Grain Valley (Missouri) | 672.10 mi (1,081.64 km) |
| Gretna to Granbury (Texas) | 488.64 mi (786.39 km) |
| Gretna to Grand Forks (North Dakota) | 1,299.31 mi (2,091.04 km) |
| Gretna to Grand Haven (Michigan) | 932.57 mi (1,500.82 km) |
| Gretna to Grand Island (Nebraska) | 892.10 mi (1,435.70 km) |
