| Bilbao to Castelletto sopra Ticino | 593.86 mi (955.72 km) |
| Bilbao to Castelli Calepio | 652.72 mi (1,050.45 km) |
| Bilbao to Castelnovo ne' Monti | 668.13 mi (1,075.25 km) |
| Bilbao to Castelnuovo Berardenga | 724.60 mi (1,166.13 km) |
| Bilbao to Castelnuovo di Porto | 785.94 mi (1,264.85 km) |
| Bilbao to Castelnuovo di Verona | 692.05 mi (1,113.74 km) |
| Bilbao to Castelnuovo Rangone | 694.73 mi (1,118.06 km) |
| Bilbao to Castelvetrano | 909.52 mi (1,463.73 km) |
| Bilbao to Castelvetro di Modena | 695.41 mi (1,119.16 km) |
| Bilbao to Castenaso | 721.07 mi (1,160.45 km) |
| Bilbao to Castenedolo | 669.85 mi (1,078.03 km) |
| Bilbao to Castiglion Fiorentino | 745.38 mi (1,199.57 km) |
| Bilbao to Castiglione del Lago | 753.13 mi (1,212.04 km) |
| Bilbao to Castiglione delle Stiviere | 678.92 mi (1,092.62 km) |
| Bilbao to Castrolibero | 1,026.93 mi (1,652.69 km) |
