| Guyancourt to Castelli Calepio | 426.28 mi (686.03 km) |
| Guyancourt to Castelnovo ne' Monti | 495.57 mi (797.55 km) |
| Guyancourt to Castelnuovo Berardenga | 586.51 mi (943.90 km) |
| Guyancourt to Castelnuovo di Porto | 681.32 mi (1,096.48 km) |
| Guyancourt to Castelnuovo di Verona | 468.99 mi (754.77 km) |
| Guyancourt to Castelnuovo Rangone | 510.91 mi (822.23 km) |
| Guyancourt to Castelvetrano | 935.11 mi (1,504.91 km) |
| Guyancourt to Castelvetro di Modena | 513.69 mi (826.70 km) |
| Guyancourt to Castenaso | 533.64 mi (858.80 km) |
| Guyancourt to Castenedolo | 448.50 mi (721.79 km) |
| Guyancourt to Castiglion Fiorentino | 602.04 mi (968.89 km) |
| Guyancourt to Castiglione del Lago | 616.38 mi (991.97 km) |
| Guyancourt to Castiglione delle Stiviere | 459.40 mi (739.34 km) |
| Guyancourt to Castrolibero | 955.76 mi (1,538.15 km) |
| Guyancourt to Castrovillari | 930.48 mi (1,497.47 km) |
