| Donostia to Cervignano del Friuli | 772.08 mi (1,242.55 km) |
| Donostia to Cesa | 844.95 mi (1,359.82 km) |
| Donostia to Cesano Maderno | 570.73 mi (918.50 km) |
| Donostia to Cesena | 711.55 mi (1,145.12 km) |
| Donostia to Cesenatico | 718.96 mi (1,157.05 km) |
| Donostia to Cetraro | 963.73 mi (1,550.98 km) |
| Donostia to Cherasco | 497.74 mi (801.04 km) |
| Donostia to Chiampo | 671.40 mi (1,080.51 km) |
| Donostia to Chiaravalle | 767.14 mi (1,234.60 km) |
| Donostia to Chiari | 604.21 mi (972.38 km) |
| Donostia to Chiavari | 567.73 mi (913.68 km) |
| Donostia to Chieri | 499.37 mi (803.67 km) |
| Donostia to Chieti | 819.56 mi (1,318.96 km) |
| Donostia to Chioggia | 716.57 mi (1,153.20 km) |
| Donostia to Chiusi | 701.47 mi (1,128.91 km) |
