| Gretna to Nocatee (Florida) | 517.13 mi (832.24 km) |
| Gretna to Nogales (Arizona) | 1,243.61 mi (2,001.40 km) |
| Gretna to Nolensville (Tennessee) | 461.40 mi (742.56 km) |
| Gretna to Norco (California) | 1,631.34 mi (2,625.39 km) |
| Gretna to Norcross (Georgia) | 441.37 mi (710.31 km) |
| Gretna to Norfolk (Nebraska) | 932.55 mi (1,500.80 km) |
| Gretna to Norfolk (Virginia) | 929.01 mi (1,495.10 km) |
| Gretna to Normal (Illinois) | 735.62 mi (1,183.87 km) |
| Gretna to Norman (Oklahoma) | 561.58 mi (903.78 km) |
| Gretna to Norridge (Illinois) | 842.01 mi (1,355.09 km) |
| Gretna to Norristown (Pennsylvania) | 1,088.63 mi (1,751.98 km) |
| Gretna to North Adams (Massachusetts) | 1,287.00 mi (2,071.23 km) |
| Gretna to North Amityville (New York) | 1,194.79 mi (1,922.83 km) |
| Gretna to North Arlington (New Jersey) | 1,167.20 mi (1,878.43 km) |
| Gretna to North Auburn (California) | 1,864.39 mi (3,000.45 km) |
