| Catonsville to Bitonto | 4,669.55 mi (7,514.92 km) |
| Catonsville to Bitritto | 4,678.61 mi (7,529.50 km) |
| Catonsville to Bollate | 4,186.82 mi (6,738.03 km) |
| Catonsville to Bologna | 4,317.15 mi (6,947.79 km) |
| Catonsville to Bolzano | 4,250.97 mi (6,841.28 km) |
| Catonsville to Bomporto | 4,295.81 mi (6,913.43 km) |
| Catonsville to Bonate di Sopra | 4,201.80 mi (6,762.15 km) |
| Catonsville to Bondeno | 4,307.20 mi (6,931.78 km) |
| Catonsville to Bordighera | 4,180.33 mi (6,727.59 km) |
| Catonsville to Borgaro Torinese | 4,136.20 mi (6,656.57 km) |
| Catonsville to Borgo a Buggiano | 4,311.40 mi (6,938.53 km) |
| Catonsville to Borgo San Dalmazzo | 4,154.69 mi (6,686.33 km) |
| Catonsville to Borgo San Lorenzo | 4,337.34 mi (6,980.27 km) |
| Catonsville to Borgomanero | 4,154.16 mi (6,685.47 km) |
| Catonsville to Borgoricco | 4,309.31 mi (6,935.16 km) |
