| Gretna to Lomita (California) | 1,675.08 mi (2,695.78 km) |
| Gretna to Lompoc (California) | 1,799.85 mi (2,896.59 km) |
| Gretna to London (Ohio) | 784.44 mi (1,262.43 km) |
| Gretna to Lone Tree (Colorado) | 1,069.96 mi (1,721.93 km) |
| Gretna to Long Beach (California) | 1,666.45 mi (2,681.89 km) |
| Gretna to Long Beach (Mississippi) | 61.44 mi (98.88 km) |
| Gretna to Long Beach (New York) | 1,179.42 mi (1,898.09 km) |
| Gretna to Long Branch (New Jersey) | 1,154.00 mi (1,857.18 km) |
| Gretna to Longmont (Colorado) | 1,104.98 mi (1,778.29 km) |
| Gretna to Longview (Texas) | 331.58 mi (533.62 km) |
| Gretna to Longview (Washington) | 2,090.84 mi (3,364.89 km) |
| Gretna to Longwood (Florida) | 530.82 mi (854.27 km) |
| Gretna to Lorain (Ohio) | 909.91 mi (1,464.36 km) |
| Gretna to Lorton (Virginia) | 949.79 mi (1,528.54 km) |
| Gretna to Los Alamitos (California) | 1,660.26 mi (2,671.93 km) |
