| Gretna to Plattsburgh (New York) | 1,364.03 mi (2,195.19 km) |
| Gretna to Pleasant Grove (Utah) | 1,416.99 mi (2,280.42 km) |
| Gretna to Pleasant Hill (California) | 1,907.43 mi (3,069.71 km) |
| Gretna to Pleasant Hill (Iowa) | 829.36 mi (1,334.73 km) |
| Gretna to Pleasant Prairie (Wisconsin) | 879.92 mi (1,416.09 km) |
| Gretna to Pleasant View (Utah) | 1,456.98 mi (2,344.78 km) |
| Gretna to Pleasanton (California) | 1,894.39 mi (3,048.73 km) |
| Gretna to Pleasanton (Texas) | 512.18 mi (824.27 km) |
| Gretna to Pleasantville (New Jersey) | 1,096.71 mi (1,764.98 km) |
| Gretna to Plover (Wisconsin) | 1,005.80 mi (1,618.67 km) |
| Gretna to Plum (Pennsylvania) | 933.36 mi (1,502.10 km) |
| Gretna to Plymouth (Indiana) | 817.40 mi (1,315.48 km) |
| Gretna to Plymouth (Minnesota) | 1,060.51 mi (1,706.73 km) |
| Gretna to Pocatello (Idaho) | 1,526.96 mi (2,457.40 km) |
| Gretna to Poinciana (Florida) | 532.16 mi (856.43 km) |
