| Bilbao to Castelfidardo | 826.12 mi (1,329.50 km) |
| Bilbao to Castelfiorentino | 696.58 mi (1,121.03 km) |
| Bilbao to Castelfranco di Sopra | 726.05 mi (1,168.46 km) |
| Bilbao to Castelfranco di Sotto | 685.45 mi (1,103.13 km) |
| Bilbao to Castelfranco Emilia | 700.75 mi (1,127.76 km) |
| Bilbao to Castelfranco Veneto | 750.13 mi (1,207.22 km) |
| Bilbao to Castellabate | 941.96 mi (1,515.93 km) |
| Bilbao to Castellammare del Golfo | 902.09 mi (1,451.77 km) |
| Bilbao to Castellammare di Stabia | 909.56 mi (1,463.80 km) |
| Bilbao to Castellamonte | 545.41 mi (877.75 km) |
| Bilbao to Castellana Grotte | 1,040.79 mi (1,674.99 km) |
| Bilbao to Castellaneta | 1,033.87 mi (1,663.86 km) |
| Bilbao to Castellanza | 605.02 mi (973.69 km) |
| Bilbao to Castellarano | 687.41 mi (1,106.28 km) |
| Bilbao to Castelleone | 642.38 mi (1,033.81 km) |
