| Gretna to Blumberg | 5,083.51 mi (8,181.13 km) |
| Gretna to Bobenheim-Roxheim | 5,022.88 mi (8,083.54 km) |
| Gretna to Bobingen | 5,163.55 mi (8,309.93 km) |
| Gretna to Boblingen | 5,076.98 mi (8,170.62 km) |
| Gretna to Bocholt | 4,887.72 mi (7,866.03 km) |
| Gretna to Bochum | 4,921.16 mi (7,919.83 km) |
| Gretna to Bockenem | 5,017.71 mi (8,075.22 km) |
| Gretna to Bockhorn | 4,896.35 mi (7,879.92 km) |
| Gretna to Bogen | 5,216.93 mi (8,395.84 km) |
| Gretna to Bohl-Iggelheim | 5,027.22 mi (8,090.53 km) |
| Gretna to Bohmte | 4,937.84 mi (7,946.69 km) |
| Gretna to Boizenburg | 4,997.62 mi (8,042.89 km) |
| Gretna to Bonen | 4,938.94 mi (7,948.45 km) |
| Gretna to Bonn | 4,938.31 mi (7,947.44 km) |
| Gretna to Bopfingen | 5,125.73 mi (8,249.06 km) |
