| Gretna to Lynn (Massachusetts) | 1,367.84 mi (2,201.33 km) |
| Gretna to Lynn Haven (Florida) | 264.89 mi (426.29 km) |
| Gretna to Lynnwood (Washington) | 2,106.71 mi (3,390.43 km) |
| Gretna to Lynwood (California) | 1,668.68 mi (2,685.49 km) |
| Gretna to Lyons (Illinois) | 831.69 mi (1,338.48 km) |
| Gretna to Mableton (Georgia) | 419.84 mi (675.66 km) |
| Gretna to Macedonia (Ohio) | 921.75 mi (1,483.41 km) |
| Gretna to Machesney Park (Illinois) | 862.54 mi (1,388.12 km) |
| Gretna to Mack (Ohio) | 707.46 mi (1,138.54 km) |
| Gretna to Macomb (Illinois) | 730.54 mi (1,175.69 km) |
| Gretna to Macon (Georgia) | 424.85 mi (683.72 km) |
| Gretna to Madera (California) | 1,790.19 mi (2,881.04 km) |
| Gretna to Madison (Alabama) | 383.26 mi (616.79 km) |
| Gretna to Madison (Indiana) | 666.26 mi (1,072.24 km) |
| Gretna to Madison (Mississippi) | 177.20 mi (285.17 km) |
