| Donostia to Chivasso | 504.76 mi (812.33 km) |
| Donostia to Ciampino | 748.42 mi (1,204.46 km) |
| Donostia to Cicciano | 859.97 mi (1,383.98 km) |
| Donostia to Cingoli | 762.56 mi (1,227.22 km) |
| Donostia to Cinisello Balsamo | 572.94 mi (922.05 km) |
| Donostia to Cinisi | 864.32 mi (1,390.99 km) |
| Donostia to Cirie | 491.71 mi (791.33 km) |
| Donostia to Ciro Marina | 1,025.48 mi (1,650.35 km) |
| Donostia to Cislago | 562.58 mi (905.38 km) |
| Donostia to Cisterna di Latina | 763.23 mi (1,228.31 km) |
| Donostia to Cisternino | 1,009.88 mi (1,625.25 km) |
| Donostia to Citta di Castello | 713.37 mi (1,148.06 km) |
| Donostia to Citta Sant'Angelo | 811.74 mi (1,306.37 km) |
| Donostia to Cittadella | 696.32 mi (1,120.62 km) |
| Donostia to Cittanova | 1,002.29 mi (1,613.03 km) |
