| Gebze to Cocentaina | 1,585.08 mi (2,550.94 km) |
| Gebze to Coin | 1,852.44 mi (2,981.22 km) |
| Gebze to Colindres | 1,684.25 mi (2,710.54 km) |
| Gebze to Collado-Villalba | 1,740.57 mi (2,801.17 km) |
| Gebze to Colmenar Viejo | 1,727.76 mi (2,780.56 km) |
| Gebze to Colmenarejo | 1,742.01 mi (2,803.50 km) |
| Gebze to Conil de la Frontera | 1,931.51 mi (3,108.46 km) |
| Gebze to Consuegra | 1,737.50 mi (2,796.23 km) |
| Gebze to Corbera de Llobregat | 1,426.34 mi (2,295.47 km) |
| Gebze to Cordoba | 1,827.57 mi (2,941.19 km) |
| Gebze to Coria del Rio | 1,906.49 mi (3,068.20 km) |
| Gebze to Crevillente | 1,613.33 mi (2,596.40 km) |
| Gebze to Cuarte de Huerva | 1,570.78 mi (2,527.92 km) |
| Gebze to Cubellas | 1,441.53 mi (2,319.92 km) |
| Gebze to Cuellar | 1,746.35 mi (2,810.48 km) |
