| Gretna to Newport East (Rhode Island) | 1,318.33 mi (2,121.65 km) |
| Gretna to Newport News (Virginia) | 923.18 mi (1,485.72 km) |
| Gretna to Newton (Iowa) | 831.24 mi (1,337.75 km) |
| Gretna to Newton (Kansas) | 699.40 mi (1,125.57 km) |
| Gretna to Newton (Massachusetts) | 1,351.96 mi (2,175.77 km) |
| Gretna to Newton (North Carolina) | 647.84 mi (1,042.61 km) |
| Gretna to Niagara Falls (New York) | 1,095.66 mi (1,763.30 km) |
| Gretna to Niceville (Florida) | 217.77 mi (350.47 km) |
| Gretna to Nicholasville (Kentucky) | 634.49 mi (1,021.11 km) |
| Gretna to Niles (Illinois) | 846.49 mi (1,362.30 km) |
| Gretna to Niles (Michigan) | 850.74 mi (1,369.13 km) |
| Gretna to Niles (Ohio) | 937.00 mi (1,507.96 km) |
| Gretna to Nipomo (California) | 1,802.43 mi (2,900.73 km) |
| Gretna to Nixa (Missouri) | 527.16 mi (848.38 km) |
| Gretna to Noblesville (Indiana) | 735.93 mi (1,184.37 km) |
