| Gretna to Beeville (Texas) | 475.84 mi (765.79 km) |
| Gretna to Bel Air (Maryland) | 1,021.56 mi (1,644.05 km) |
| Gretna to Bel Air North (Maryland) | 1,021.20 mi (1,643.46 km) |
| Gretna to Bel Air South (Maryland) | 1,021.72 mi (1,644.30 km) |
| Gretna to Belgrade (Montana) | 1,581.33 mi (2,544.91 km) |
| Gretna to Bell (California) | 1,667.56 mi (2,683.68 km) |
| Gretna to Bell Gardens (California) | 1,666.11 mi (2,681.34 km) |
| Gretna to Bella Vista (Arkansas) | 514.38 mi (827.81 km) |
| Gretna to Bellair-Meadowbrook Terrace (Florida) | 497.49 mi (800.64 km) |
| Gretna to Bellaire (Texas) | 324.66 mi (522.49 km) |
| Gretna to Belle Chasse (Louisiana) | 4.69 mi (7.55 km) |
| Gretna to Belle Glade (Florida) | 612.50 mi (985.72 km) |
| Gretna to Bellefontaine (Ohio) | 804.31 mi (1,294.42 km) |
| Gretna to Bellefontaine Neighbors (Missouri) | 611.06 mi (983.41 km) |
| Gretna to Belleville (Illinois) | 594.65 mi (956.99 km) |
