| Donostia to Cay | 1,741.22 mi (2,802.22 km) |
| Donostia to Caybasi | 1,988.96 mi (3,200.93 km) |
| Donostia to Caycuma | 1,731.19 mi (2,786.08 km) |
| Donostia to Cayeli | 2,167.16 mi (3,487.70 km) |
| Donostia to Cayiralan | 1,955.42 mi (3,146.94 km) |
| Donostia to Cayirhan | 1,738.61 mi (2,798.02 km) |
| Donostia to Cayirli | 2,162.65 mi (3,480.46 km) |
| Donostia to Cayirova | 1,607.76 mi (2,587.44 km) |
| Donostia to Caykara | 2,150.93 mi (3,461.59 km) |
| Donostia to Cekerek | 1,929.96 mi (3,105.97 km) |
| Donostia to Cekme | 1,593.85 mi (2,565.05 km) |
| Donostia to Celtik | 1,768.87 mi (2,846.72 km) |
| Donostia to Cerkes | 1,783.91 mi (2,870.93 km) |
| Donostia to Cerkezkoy | 1,530.22 mi (2,462.66 km) |
| Donostia to Cermik | 2,175.89 mi (3,501.76 km) |
