| Gretna to Lowell (Indiana) | 800.06 mi (1,287.57 km) |
| Gretna to Lowell (Massachusetts) | 1,358.96 mi (2,187.04 km) |
| Gretna to Lower Burrell (Pennsylvania) | 938.70 mi (1,510.69 km) |
| Gretna to Lowes Island (Virginia) | 958.29 mi (1,542.23 km) |
| Gretna to Lubbock (Texas) | 739.40 mi (1,189.95 km) |
| Gretna to Lufkin (Texas) | 294.63 mi (474.16 km) |
| Gretna to Luling (Louisiana) | 18.03 mi (29.01 km) |
| Gretna to Lumberton (North Carolina) | 721.78 mi (1,161.59 km) |
| Gretna to Lumberton (Texas) | 249.58 mi (401.65 km) |
| Gretna to Lutz (Florida) | 475.35 mi (765.00 km) |
| Gretna to Lynbrook (New York) | 1,181.71 mi (1,901.78 km) |
| Gretna to Lynchburg (Virginia) | 810.14 mi (1,303.79 km) |
| Gretna to Lynden (Washington) | 2,145.80 mi (3,453.33 km) |
| Gretna to Lyndhurst (Ohio) | 933.58 mi (1,502.45 km) |
| Gretna to Lyndon (Kentucky) | 630.96 mi (1,015.44 km) |
