| Gourock to Civril | 1,997.33 mi (3,214.39 km) |
| Gourock to Cizre | 2,507.21 mi (4,034.97 km) |
| Gourock to Cobanlar | 2,014.08 mi (3,241.35 km) |
| Gourock to Corlu | 1,782.59 mi (2,868.80 km) |
| Gourock to Corum | 2,076.17 mi (3,341.27 km) |
| Gourock to Cukurca | 2,565.76 mi (4,129.19 km) |
| Gourock to Cukurcayir | 2,237.35 mi (3,600.67 km) |
| Gourock to Cumayeri | 1,911.14 mi (3,075.68 km) |
| Gourock to Cumra | 2,144.21 mi (3,450.78 km) |
| Gourock to Cungus | 2,353.49 mi (3,787.58 km) |
| Gourock to Dargecit | 2,478.90 mi (3,989.40 km) |
| Gourock to Davutlar | 1,941.76 mi (3,124.96 km) |
| Gourock to Demirozu | 2,281.46 mi (3,671.65 km) |
| Gourock to Demre | 2,114.75 mi (3,403.37 km) |
| Gourock to Denizciler | 2,317.92 mi (3,730.34 km) |
