| Gretna to Fortuna (California) | 2,044.58 mi (3,290.43 km) |
| Gretna to Fortuna Foothills (Arizona) | 1,446.83 mi (2,328.45 km) |
| Gretna to Foster City (California) | 1,914.46 mi (3,081.02 km) |
| Gretna to Fostoria (Ohio) | 861.60 mi (1,386.61 km) |
| Gretna to Fountain (Colorado) | 1,029.98 mi (1,657.59 km) |
| Gretna to Fountain Hills (Arizona) | 1,296.95 mi (2,087.24 km) |
| Gretna to Fountain Inn (South Carolina) | 565.09 mi (909.43 km) |
| Gretna to Fountain Valley (California) | 1,653.91 mi (2,661.71 km) |
| Gretna to Fountainebleau (Florida) | 657.93 mi (1,058.84 km) |
| Gretna to Four Corners (Oregon) | 2,062.76 mi (3,319.68 km) |
| Gretna to Four Corners (Texas) | 336.65 mi (541.79 km) |
| Gretna to Four Square Mile (Colorado) | 1,076.51 mi (1,732.48 km) |
| Gretna to Fox Crossing (Wisconsin) | 992.66 mi (1,597.54 km) |
| Gretna to Fox Lake (Illinois) | 870.80 mi (1,401.42 km) |
| Gretna to Framingham (Massachusetts) | 1,341.35 mi (2,158.70 km) |
