| Gretna to Beacon (New York) | 1,203.01 mi (1,936.05 km) |
| Gretna to Bear (Delaware) | 1,053.70 mi (1,695.77 km) |
| Gretna to Beatrice (Nebraska) | 809.27 mi (1,302.39 km) |
| Gretna to Beaufort (South Carolina) | 578.58 mi (931.14 km) |
| Gretna to Beaumont (California) | 1,598.45 mi (2,572.46 km) |
| Gretna to Beaumont (Texas) | 245.24 mi (394.67 km) |
| Gretna to Beaver Dam (Wisconsin) | 939.22 mi (1,511.53 km) |
| Gretna to Beavercreek (Ohio) | 758.37 mi (1,220.47 km) |
| Gretna to Beaverton (Oregon) | 2,068.16 mi (3,328.39 km) |
| Gretna to Beckley (West Virginia) | 744.34 mi (1,197.90 km) |
| Gretna to Bedford (Indiana) | 650.73 mi (1,047.25 km) |
| Gretna to Bedford (Ohio) | 925.11 mi (1,488.82 km) |
| Gretna to Bedford (Texas) | 464.34 mi (747.28 km) |
| Gretna to Bedford Heights (Ohio) | 926.69 mi (1,491.37 km) |
| Gretna to Beech Grove (Indiana) | 713.63 mi (1,148.48 km) |
