| Castanet-Tolosan to Benevento | 697.50 mi (1,122.51 km) |
| Castanet-Tolosan to Bergamo | 429.02 mi (690.44 km) |
| Castanet-Tolosan to Bernalda | 807.67 mi (1,299.81 km) |
| Castanet-Tolosan to Bertinoro | 531.51 mi (855.38 km) |
| Castanet-Tolosan to Besana in Brianza | 411.40 mi (662.08 km) |
| Castanet-Tolosan to Besozzo | 387.15 mi (623.06 km) |
| Castanet-Tolosan to Biancavilla | 808.72 mi (1,301.51 km) |
| Castanet-Tolosan to Biassono | 409.18 mi (658.51 km) |
| Castanet-Tolosan to Bibbiano | 451.87 mi (727.22 km) |
| Castanet-Tolosan to Bibbiena | 516.05 mi (830.51 km) |
| Castanet-Tolosan to Biella | 353.02 mi (568.13 km) |
| Castanet-Tolosan to Bisceglie | 780.73 mi (1,256.47 km) |
| Castanet-Tolosan to Bisignano | 811.91 mi (1,306.65 km) |
| Castanet-Tolosan to Bitetto | 797.15 mi (1,282.90 km) |
| Castanet-Tolosan to Bitonto | 792.12 mi (1,274.80 km) |
