| Gretna to Bixby (Oklahoma) | 536.45 mi (863.34 km) |
| Gretna to Black Forest (Colorado) | 1,043.35 mi (1,679.12 km) |
| Gretna to Blackfoot (Idaho) | 1,532.45 mi (2,466.24 km) |
| Gretna to Blackhawk (California) | 1,897.10 mi (3,053.08 km) |
| Gretna to Blacksburg (Virginia) | 749.36 mi (1,205.98 km) |
| Gretna to Blackwells Mills (New Jersey) | 1,134.70 mi (1,826.13 km) |
| Gretna to Blaine (Minnesota) | 1,068.18 mi (1,719.07 km) |
| Gretna to Bloomingdale (Florida) | 491.52 mi (791.02 km) |
| Gretna to Bloomingdale (Illinois) | 839.00 mi (1,350.24 km) |
| Gretna to Bloomington (California) | 1,623.23 mi (2,612.34 km) |
| Gretna to Bloomington (Illinois) | 732.54 mi (1,178.91 km) |
| Gretna to Bloomington (Indiana) | 669.95 mi (1,078.19 km) |
| Gretna to Bloomington (Minnesota) | 1,046.13 mi (1,683.58 km) |
| Gretna to Bloomsburg (Pennsylvania) | 1,080.43 mi (1,738.78 km) |
| Gretna to Blue Ash (Ohio) | 720.88 mi (1,160.15 km) |
