| Gretna to Land O' Lakes (Florida) | 473.96 mi (762.77 km) |
| Gretna to Landover (Maryland) | 973.28 mi (1,566.35 km) |
| Gretna to Langley Park (Maryland) | 971.89 mi (1,564.11 km) |
| Gretna to Lanham (Maryland) | 976.79 mi (1,572.00 km) |
| Gretna to Lansdale (Pennsylvania) | 1,095.97 mi (1,763.79 km) |
| Gretna to Lansdowne (Pennsylvania) | 1,084.08 mi (1,744.66 km) |
| Gretna to Lansdowne (Virginia) | 954.28 mi (1,535.76 km) |
| Gretna to Lansing (Illinois) | 817.32 mi (1,315.35 km) |
| Gretna to Lansing (Kansas) | 700.98 mi (1,128.12 km) |
| Gretna to Lansing (Michigan) | 935.46 mi (1,505.47 km) |
| Gretna to Lantana (Florida) | 650.02 mi (1,046.11 km) |
| Gretna to Lantana (Texas) | 470.81 mi (757.70 km) |
| Gretna to Laplace (Louisiana) | 27.78 mi (44.70 km) |
| Gretna to Laramie (Wyoming) | 1,173.05 mi (1,887.84 km) |
| Gretna to Laredo (Texas) | 594.01 mi (955.97 km) |
