| Gebze to Castelfidardo | 833.21 mi (1,340.92 km) |
| Gebze to Castelfiorentino | 962.66 mi (1,549.26 km) |
| Gebze to Castelfranco di Sopra | 933.37 mi (1,502.11 km) |
| Gebze to Castelfranco di Sotto | 974.09 mi (1,567.65 km) |
| Gebze to Castelfranco Emilia | 967.14 mi (1,556.46 km) |
| Gebze to Castelfranco Veneto | 940.52 mi (1,513.62 km) |
| Gebze to Castellabate | 760.33 mi (1,223.63 km) |
| Gebze to Castellammare del Golfo | 902.66 mi (1,452.70 km) |
| Gebze to Castellammare di Stabia | 781.79 mi (1,258.18 km) |
| Gebze to Castellamonte | 1,136.81 mi (1,829.51 km) |
| Gebze to Castellana Grotte | 640.68 mi (1,031.08 km) |
| Gebze to Castellaneta | 654.16 mi (1,052.77 km) |
| Gebze to Castellanza | 1,082.75 mi (1,742.51 km) |
| Gebze to Castellarano | 979.91 mi (1,577.01 km) |
| Gebze to Castelleone | 1,037.68 mi (1,669.98 km) |
