| Donostia to Cizre | 2,335.15 mi (3,758.07 km) |
| Donostia to Cobanlar | 1,726.19 mi (2,778.04 km) |
| Donostia to Corlu | 1,522.66 mi (2,450.49 km) |
| Donostia to Corum | 1,892.69 mi (3,045.99 km) |
| Donostia to Cukurca | 2,408.94 mi (3,876.81 km) |
| Donostia to Cukurcayir | 2,120.90 mi (3,413.26 km) |
| Donostia to Cumayeri | 1,685.74 mi (2,712.93 km) |
| Donostia to Cumra | 1,855.87 mi (2,986.74 km) |
| Donostia to Cungus | 2,165.65 mi (3,485.27 km) |
| Donostia to Dargecit | 2,305.78 mi (3,710.80 km) |
| Donostia to Davutlar | 1,576.59 mi (2,537.28 km) |
| Donostia to Demirozu | 2,146.99 mi (3,455.25 km) |
| Donostia to Demre | 1,754.03 mi (2,822.85 km) |
| Donostia to Denizciler | 2,055.06 mi (3,307.29 km) |
| Donostia to Denizli | 1,665.16 mi (2,679.82 km) |
