| Donostia to Castelletto sopra Ticino | 547.97 mi (881.87 km) |
| Donostia to Castelli Calepio | 606.46 mi (976.00 km) |
| Donostia to Castelnovo ne' Monti | 620.75 mi (999.01 km) |
| Donostia to Castelnuovo Berardenga | 676.94 mi (1,089.43 km) |
| Donostia to Castelnuovo di Porto | 738.56 mi (1,188.60 km) |
| Donostia to Castelnuovo di Verona | 645.45 mi (1,038.76 km) |
| Donostia to Castelnuovo Rangone | 647.41 mi (1,041.91 km) |
| Donostia to Castelvetrano | 866.67 mi (1,394.77 km) |
| Donostia to Castelvetro di Modena | 648.06 mi (1,042.96 km) |
| Donostia to Castenaso | 673.72 mi (1,084.25 km) |
| Donostia to Castenedolo | 623.35 mi (1,003.19 km) |
| Donostia to Castiglion Fiorentino | 697.72 mi (1,122.87 km) |
| Donostia to Castiglione del Lago | 705.48 mi (1,135.36 km) |
| Donostia to Castiglione delle Stiviere | 632.32 mi (1,017.62 km) |
| Donostia to Castrolibero | 980.85 mi (1,578.52 km) |
