| Donostia to Cesme | 1,510.75 mi (2,431.31 km) |
| Donostia to Ceyhan | 2,023.83 mi (3,257.04 km) |
| Donostia to Ceylanpinar | 2,241.90 mi (3,607.99 km) |
| Donostia to Cicekdagi | 1,886.34 mi (3,035.77 km) |
| Donostia to Cide | 1,768.80 mi (2,846.61 km) |
| Donostia to Cifteler | 1,722.55 mi (2,772.17 km) |
| Donostia to Ciftlik | 1,925.87 mi (3,099.39 km) |
| Donostia to Ciftlikkoy | 1,608.53 mi (2,588.67 km) |
| Donostia to Cihanbeyli | 1,835.09 mi (2,953.29 km) |
| Donostia to Cildir | 2,284.95 mi (3,677.28 km) |
| Donostia to Cilimli | 1,690.17 mi (2,720.07 km) |
| Donostia to Cinar | 2,235.42 mi (3,597.56 km) |
| Donostia to Cinarcik | 1,598.70 mi (2,572.86 km) |
| Donostia to Cine | 1,618.13 mi (2,604.12 km) |
| Donostia to Civril | 1,683.89 mi (2,709.96 km) |
