| Catonsville to Boppard | 3,981.89 mi (6,408.24 km) |
| Catonsville to Borgentreich | 4,009.80 mi (6,453.15 km) |
| Catonsville to Borgholzhausen | 3,957.76 mi (6,369.40 km) |
| Catonsville to Borken | 3,908.91 mi (6,290.79 km) |
| Catonsville to Borna | 4,149.74 mi (6,678.36 km) |
| Catonsville to Bornheim | 3,943.60 mi (6,346.60 km) |
| Catonsville to Bosel | 3,919.79 mi (6,308.29 km) |
| Catonsville to Bottrop | 3,919.43 mi (6,307.71 km) |
| Catonsville to Bovenden | 4,035.37 mi (6,494.30 km) |
| Catonsville to Brackenheim | 4,075.21 mi (6,558.41 km) |
| Catonsville to Brake | 3,931.20 mi (6,326.65 km) |
| Catonsville to Brakel | 4,002.91 mi (6,442.07 km) |
| Catonsville to Bramsche | 3,937.24 mi (6,336.38 km) |
| Catonsville to Brand | 3,910.15 mi (6,292.77 km) |
| Catonsville to Brand-Erbisdorf | 4,189.36 mi (6,742.12 km) |
