| Castanet-Tolosan to Bitritto | 800.95 mi (1,289.00 km) |
| Castanet-Tolosan to Bollate | 400.50 mi (644.55 km) |
| Castanet-Tolosan to Bologna | 493.59 mi (794.36 km) |
| Castanet-Tolosan to Bolzano | 523.27 mi (842.13 km) |
| Castanet-Tolosan to Bomporto | 480.05 mi (772.57 km) |
| Castanet-Tolosan to Bonate di Sopra | 424.03 mi (682.40 km) |
| Castanet-Tolosan to Bondeno | 499.98 mi (804.64 km) |
| Castanet-Tolosan to Bordighera | 308.88 mi (497.09 km) |
| Castanet-Tolosan to Borgaro Torinese | 324.23 mi (521.80 km) |
| Castanet-Tolosan to Borgo a Buggiano | 461.78 mi (743.16 km) |
| Castanet-Tolosan to Borgo San Dalmazzo | 303.09 mi (487.78 km) |
| Castanet-Tolosan to Borgo San Lorenzo | 494.13 mi (795.23 km) |
| Castanet-Tolosan to Borgomanero | 374.37 mi (602.49 km) |
| Castanet-Tolosan to Borgoricco | 533.53 mi (858.63 km) |
| Castanet-Tolosan to Borgosatollo | 451.36 mi (726.39 km) |
