| Guyancourt to Catania | 1,015.52 mi (1,634.32 km) |
| Guyancourt to Catanzaro | 991.50 mi (1,595.67 km) |
| Guyancourt to Cattolica | 606.15 mi (975.51 km) |
| Guyancourt to Cava de' Tirreni | 831.72 mi (1,338.53 km) |
| Guyancourt to Cavallino | 982.51 mi (1,581.20 km) |
| Guyancourt to Cavarzere | 534.04 mi (859.45 km) |
| Guyancourt to Cave | 712.52 mi (1,146.69 km) |
| Guyancourt to Cavriago | 489.03 mi (787.02 km) |
| Guyancourt to Cavriglia | 577.81 mi (929.90 km) |
| Guyancourt to Cazzago San Martino | 433.32 mi (697.36 km) |
| Guyancourt to Ceccano | 739.28 mi (1,189.75 km) |
| Guyancourt to Cecina | 552.55 mi (889.24 km) |
| Guyancourt to Cefalu | 951.52 mi (1,531.32 km) |
| Guyancourt to Ceglie Messapico | 939.74 mi (1,512.36 km) |
| Guyancourt to Celano | 722.10 mi (1,162.11 km) |
