| Gelsenkirchen to Cizre | 1,962.69 mi (3,158.65 km) |
| Gelsenkirchen to Cobanlar | 1,444.20 mi (2,324.22 km) |
| Gelsenkirchen to Corlu | 1,212.95 mi (1,952.05 km) |
| Gelsenkirchen to Corum | 1,522.78 mi (2,450.68 km) |
| Gelsenkirchen to Cukurca | 2,025.66 mi (3,259.98 km) |
| Gelsenkirchen to Cukurcayir | 1,702.70 mi (2,740.24 km) |
| Gelsenkirchen to Cumayeri | 1,347.66 mi (2,168.85 km) |
| Gelsenkirchen to Cumra | 1,575.49 mi (2,535.51 km) |
| Gelsenkirchen to Cungus | 1,803.40 mi (2,902.30 km) |
| Gelsenkirchen to Dargecit | 1,933.76 mi (3,112.09 km) |
| Gelsenkirchen to Davutlar | 1,367.44 mi (2,200.68 km) |
| Gelsenkirchen to Demirozu | 1,742.81 mi (2,804.78 km) |
| Gelsenkirchen to Demre | 1,540.85 mi (2,479.77 km) |
| Gelsenkirchen to Denizciler | 1,754.06 mi (2,822.88 km) |
| Gelsenkirchen to Denizli | 1,428.76 mi (2,299.36 km) |
