| Gretna to Bridgeport (Connecticut) | 1,223.07 mi (1,968.34 km) |
| Gretna to Bridgeton (Missouri) | 612.35 mi (985.48 km) |
| Gretna to Bridgetown (Ohio) | 708.89 mi (1,140.85 km) |
| Gretna to Bridgeview (Illinois) | 826.92 mi (1,330.79 km) |
| Gretna to Brigham City (Utah) | 1,464.44 mi (2,356.78 km) |
| Gretna to Brighton (Colorado) | 1,083.98 mi (1,744.50 km) |
| Gretna to Bristol (Connecticut) | 1,253.13 mi (2,016.73 km) |
| Gretna to Bristol (Tennessee) | 644.51 mi (1,037.24 km) |
| Gretna to Bristol (Virginia) | 649.62 mi (1,045.46 km) |
| Gretna to Broadlands (Virginia) | 950.02 mi (1,528.92 km) |
| Gretna to Broadview Heights (Ohio) | 916.88 mi (1,475.58 km) |
| Gretna to Brock Hall (Maryland) | 976.92 mi (1,572.21 km) |
| Gretna to Brockton (Massachusetts) | 1,350.54 mi (2,173.49 km) |
| Gretna to Broken Arrow (Oklahoma) | 537.84 mi (865.58 km) |
| Gretna to Bronx (New York) | 1,180.88 mi (1,900.44 km) |
