| Guyancourt to Castelfiorentino | 554.90 mi (893.02 km) |
| Guyancourt to Castelfranco di Sopra | 575.69 mi (926.48 km) |
| Guyancourt to Castelfranco di Sotto | 542.27 mi (872.70 km) |
| Guyancourt to Castelfranco Emilia | 513.60 mi (826.56 km) |
| Guyancourt to Castelfranco Veneto | 509.48 mi (819.93 km) |
| Guyancourt to Castellabate | 862.01 mi (1,387.28 km) |
| Guyancourt to Castellammare del Golfo | 917.55 mi (1,476.66 km) |
| Guyancourt to Castellammare di Stabia | 824.07 mi (1,326.21 km) |
| Guyancourt to Castellamonte | 353.70 mi (569.23 km) |
| Guyancourt to Castellana Grotte | 915.99 mi (1,474.15 km) |
| Guyancourt to Castellaneta | 918.52 mi (1,478.21 km) |
| Guyancourt to Castellanza | 387.35 mi (623.38 km) |
| Guyancourt to Castellarano | 504.39 mi (811.73 km) |
| Guyancourt to Castelleone | 434.08 mi (698.58 km) |
| Guyancourt to Castelletto sopra Ticino | 372.90 mi (600.12 km) |
