| Catonsville to Barberino di Mugello | 4,329.35 mi (6,967.42 km) |
| Catonsville to Barcellona-Pozzo di Gotto | 4,717.38 mi (7,591.89 km) |
| Catonsville to Bareggio | 4,183.75 mi (6,733.10 km) |
| Catonsville to Barga | 4,294.03 mi (6,910.57 km) |
| Catonsville to Bari | 4,677.20 mi (7,527.23 km) |
| Catonsville to Barletta | 4,644.59 mi (7,474.75 km) |
| Catonsville to Baronissi | 4,599.60 mi (7,402.34 km) |
| Catonsville to Barrafranca | 4,700.95 mi (7,565.44 km) |
| Catonsville to Bassano del Grappa | 4,291.11 mi (6,905.88 km) |
| Catonsville to Battipaglia | 4,613.81 mi (7,425.21 km) |
| Catonsville to Beinasco | 4,137.48 mi (6,658.64 km) |
| Catonsville to Bellinzago Novarese | 4,165.01 mi (6,702.93 km) |
| Catonsville to Belluno | 4,298.92 mi (6,918.44 km) |
| Catonsville to Belmonte Mezzagno | 4,637.76 mi (7,463.76 km) |
| Catonsville to Belpasso | 4,728.47 mi (7,609.74 km) |
