| Gretna to Palmetto Bay (Florida) | 664.17 mi (1,068.88 km) |
| Gretna to Palmetto Estates (Florida) | 662.04 mi (1,065.45 km) |
| Gretna to Palmview (Texas) | 567.70 mi (913.62 km) |
| Gretna to Palo Alto (California) | 1,906.72 mi (3,068.57 km) |
| Gretna to Palos Heights (Illinois) | 821.79 mi (1,322.54 km) |
| Gretna to Palos Hills (Illinois) | 823.91 mi (1,325.95 km) |
| Gretna to Palos Verdes Estates (California) | 1,679.65 mi (2,703.13 km) |
| Gretna to Pampa (Texas) | 743.67 mi (1,196.82 km) |
| Gretna to Panama City (Florida) | 266.93 mi (429.58 km) |
| Gretna to Panama City Beach (Florida) | 250.57 mi (403.26 km) |
| Gretna to Papillion (Nebraska) | 846.55 mi (1,362.39 km) |
| Gretna to Paradise (Nevada) | 1,510.03 mi (2,430.16 km) |
| Gretna to Paradise Valley (Arizona) | 1,309.14 mi (2,106.85 km) |
| Gretna to Paragould (Arkansas) | 425.45 mi (684.70 km) |
| Gretna to Paramount (California) | 1,666.53 mi (2,682.03 km) |
