| Gretna to Greenfield (California) | 1,849.94 mi (2,977.19 km) |
| Gretna to Greenfield (Indiana) | 724.43 mi (1,165.86 km) |
| Gretna to Greenfield (Wisconsin) | 908.86 mi (1,462.66 km) |
| Gretna to Greenlawn (New York) | 1,203.06 mi (1,936.14 km) |
| Gretna to Greensboro (North Carolina) | 729.79 mi (1,174.49 km) |
| Gretna to Greensburg (Indiana) | 701.47 mi (1,128.91 km) |
| Gretna to Greensburg (Pennsylvania) | 930.81 mi (1,497.99 km) |
| Gretna to Greentree (New Jersey) | 1,096.13 mi (1,764.06 km) |
| Gretna to Greenville (Mississippi) | 247.19 mi (397.81 km) |
| Gretna to Greenville (North Carolina) | 833.73 mi (1,341.77 km) |
| Gretna to Greenville (Ohio) | 768.07 mi (1,236.08 km) |
| Gretna to Greenville (South Carolina) | 562.73 mi (905.62 km) |
| Gretna to Greenville (Texas) | 419.74 mi (675.51 km) |
| Gretna to Greenwood (Indiana) | 705.87 mi (1,135.98 km) |
| Gretna to Greenwood (Mississippi) | 249.06 mi (400.82 km) |
