| Gretna to Lemay (Missouri) | 595.90 mi (959.01 km) |
| Gretna to Lemon Grove (California) | 1,600.19 mi (2,575.25 km) |
| Gretna to Lemon Hill (California) | 1,879.66 mi (3,025.03 km) |
| Gretna to Lemont (Illinois) | 820.64 mi (1,320.70 km) |
| Gretna to Lemoore (California) | 1,769.67 mi (2,848.01 km) |
| Gretna to Lenexa (Kansas) | 681.15 mi (1,096.20 km) |
| Gretna to Lennox (California) | 1,677.71 mi (2,700.01 km) |
| Gretna to Lenoir (North Carolina) | 644.83 mi (1,037.75 km) |
| Gretna to Leominster (Massachusetts) | 1,335.47 mi (2,149.24 km) |
| Gretna to Leon Valley (Texas) | 514.57 mi (828.13 km) |
| Gretna to Levelland (Texas) | 765.96 mi (1,232.70 km) |
| Gretna to Levittown (New York) | 1,191.30 mi (1,917.21 km) |
| Gretna to Levittown (Pennsylvania) | 1,110.83 mi (1,787.70 km) |
| Gretna to Lewisburg (Tennessee) | 427.17 mi (687.46 km) |
| Gretna to Lewiston (Idaho) | 1,839.09 mi (2,959.73 km) |
