| Gretna to Boppard | 4,972.57 mi (8,002.59 km) |
| Gretna to Borgentreich | 4,997.61 mi (8,042.87 km) |
| Gretna to Borgholzhausen | 4,945.07 mi (7,958.32 km) |
| Gretna to Borken | 4,897.45 mi (7,881.69 km) |
| Gretna to Borna | 5,136.48 mi (8,266.37 km) |
| Gretna to Bornheim | 4,933.79 mi (7,940.16 km) |
| Gretna to Bosel | 4,905.41 mi (7,894.49 km) |
| Gretna to Bottrop | 4,908.47 mi (7,899.42 km) |
| Gretna to Bovenden | 5,022.76 mi (8,083.35 km) |
| Gretna to Brackenheim | 5,066.71 mi (8,154.08 km) |
| Gretna to Brake | 4,915.74 mi (7,911.12 km) |
| Gretna to Brakel | 4,990.48 mi (8,031.40 km) |
| Gretna to Bramsche | 4,924.13 mi (7,924.63 km) |
| Gretna to Brand | 4,900.68 mi (7,886.88 km) |
| Gretna to Brand-Erbisdorf | 5,176.05 mi (8,330.05 km) |
