| Gretna to Germantown (Tennessee) | 357.75 mi (575.74 km) |
| Gretna to Germantown (Wisconsin) | 926.75 mi (1,491.45 km) |
| Gretna to Gibsonton (Florida) | 486.11 mi (782.31 km) |
| Gretna to Gig Harbor (Washington) | 2,105.52 mi (3,388.51 km) |
| Gretna to Gilbert (Arizona) | 1,295.53 mi (2,084.95 km) |
| Gretna to Gillette (Wyoming) | 1,303.04 mi (2,097.03 km) |
| Gretna to Gilroy (California) | 1,873.20 mi (3,014.63 km) |
| Gretna to Gladeview (Florida) | 661.79 mi (1,065.05 km) |
| Gretna to Gladstone (Missouri) | 691.82 mi (1,113.37 km) |
| Gretna to Gladstone (Oregon) | 2,055.82 mi (3,308.53 km) |
| Gretna to Glasgow (Delaware) | 1,050.12 mi (1,690.00 km) |
| Gretna to Glasgow (Kentucky) | 544.67 mi (876.56 km) |
| Gretna to Glassboro (New Jersey) | 1,081.87 mi (1,741.11 km) |
| Gretna to Glassmanor (Maryland) | 964.82 mi (1,552.73 km) |
| Gretna to Glen Allen (Virginia) | 897.48 mi (1,444.36 km) |
