| Gretna to Tacoma (Washington) | 2,096.84 mi (3,374.54 km) |
| Gretna to Tahlequah (Oklahoma) | 503.36 mi (810.07 km) |
| Gretna to Takoma Park (Maryland) | 970.59 mi (1,562.01 km) |
| Gretna to Talladega (Alabama) | 336.52 mi (541.58 km) |
| Gretna to Tallahassee (Florida) | 348.34 mi (560.60 km) |
| Gretna to Tallmadge (Ohio) | 911.90 mi (1,467.56 km) |
| Gretna to Tamalpais-Homestead Valley (California) | 1,931.81 mi (3,108.94 km) |
| Gretna to Tamarac (Florida) | 649.59 mi (1,045.41 km) |
| Gretna to Tamiami (Florida) | 655.42 mi (1,054.80 km) |
| Gretna to Tampa (Florida) | 478.44 mi (769.98 km) |
| Gretna to Tanaina (Alaska) | 3,425.07 mi (5,512.11 km) |
| Gretna to Tanque Verde (Arizona) | 1,233.18 mi (1,984.61 km) |
| Gretna to Tarboro (North Carolina) | 833.79 mi (1,341.85 km) |
| Gretna to Tarpon Springs (Florida) | 456.76 mi (735.08 km) |
| Gretna to Tarrytown (New York) | 1,189.34 mi (1,914.05 km) |
