| Donaueschingen to Cizre | 1,844.00 mi (2,967.62 km) |
| Donaueschingen to Cobanlar | 1,282.61 mi (2,064.16 km) |
| Donaueschingen to Corlu | 1,056.08 mi (1,699.60 km) |
| Donaueschingen to Corum | 1,397.13 mi (2,248.47 km) |
| Donaueschingen to Cukurca | 1,912.21 mi (3,077.40 km) |
| Donaueschingen to Cukurcayir | 1,601.37 mi (2,577.16 km) |
| Donaueschingen to Cumayeri | 1,205.35 mi (1,939.82 km) |
| Donaueschingen to Cumra | 1,415.85 mi (2,278.59 km) |
| Donaueschingen to Cungus | 1,678.59 mi (2,701.42 km) |
| Donaueschingen to Dargecit | 1,814.57 mi (2,920.27 km) |
| Donaueschingen to Davutlar | 1,180.25 mi (1,899.43 km) |
| Donaueschingen to Demirozu | 1,635.48 mi (2,632.05 km) |
| Donaueschingen to Demre | 1,358.57 mi (2,186.40 km) |
| Donaueschingen to Denizciler | 1,604.68 mi (2,582.49 km) |
| Donaueschingen to Denizli | 1,251.42 mi (2,013.97 km) |
