| Gretna to Berkeley (California) | 1,917.55 mi (3,086.00 km) |
| Gretna to Berkley (Colorado) | 1,087.48 mi (1,750.13 km) |
| Gretna to Berkley (Michigan) | 949.45 mi (1,527.99 km) |
| Gretna to Berthoud (Colorado) | 1,108.04 mi (1,783.23 km) |
| Gretna to Berwick (Pennsylvania) | 1,090.98 mi (1,755.76 km) |
| Gretna to Berwyn (Illinois) | 834.07 mi (1,342.31 km) |
| Gretna to Bessemer (Alabama) | 299.93 mi (482.70 km) |
| Gretna to Bethany (Oklahoma) | 586.38 mi (943.69 km) |
| Gretna to Bethany (Oregon) | 2,071.05 mi (3,333.04 km) |
| Gretna to Bethel Park (Pennsylvania) | 914.12 mi (1,471.14 km) |
| Gretna to Bethesda (Maryland) | 965.80 mi (1,554.31 km) |
| Gretna to Bethlehem (Pennsylvania) | 1,108.20 mi (1,783.47 km) |
| Gretna to Bethpage (New York) | 1,193.44 mi (1,920.66 km) |
| Gretna to Bettendorf (Iowa) | 805.67 mi (1,296.61 km) |
| Gretna to Beverly (Massachusetts) | 1,375.66 mi (2,213.92 km) |
