| Gretna to Pikesville (Maryland) | 1,000.33 mi (1,609.87 km) |
| Gretna to Pine Bluff (Arkansas) | 318.70 mi (512.89 km) |
| Gretna to Pine Castle (Florida) | 532.72 mi (857.33 km) |
| Gretna to Pine Hill (New Jersey) | 1,090.75 mi (1,755.39 km) |
| Gretna to Pine Hills (Florida) | 525.33 mi (845.44 km) |
| Gretna to Pinecrest (Florida) | 663.73 mi (1,068.17 km) |
| Gretna to Pinehurst (North Carolina) | 715.66 mi (1,151.75 km) |
| Gretna to Pinellas Park (Florida) | 466.22 mi (750.31 km) |
| Gretna to Pineville (Louisiana) | 171.56 mi (276.10 km) |
| Gretna to Pineville (North Carolina) | 642.06 mi (1,033.29 km) |
| Gretna to Pinewood (Florida) | 661.91 mi (1,065.24 km) |
| Gretna to Piney Green (North Carolina) | 814.16 mi (1,310.27 km) |
| Gretna to Pinole (California) | 1,918.98 mi (3,088.29 km) |
| Gretna to Piqua (Ohio) | 779.64 mi (1,254.71 km) |
| Gretna to Pittsburg (California) | 1,898.32 mi (3,055.04 km) |
