| Clayton to Chivasso | 734.74 mi (1,182.45 km) |
| Clayton to Ciampino | 1,060.25 mi (1,706.31 km) |
| Clayton to Cicciano | 1,164.39 mi (1,873.90 km) |
| Clayton to Cingoli | 991.03 mi (1,594.91 km) |
| Clayton to Cinisello Balsamo | 751.15 mi (1,208.86 km) |
| Clayton to Cinisi | 1,289.17 mi (2,074.72 km) |
| Clayton to Cirie | 724.68 mi (1,166.26 km) |
| Clayton to Ciro Marina | 1,333.58 mi (2,146.18 km) |
| Clayton to Cislago | 738.39 mi (1,188.32 km) |
| Clayton to Cisterna di Latina | 1,078.81 mi (1,736.18 km) |
| Clayton to Cisternino | 1,267.83 mi (2,040.37 km) |
| Clayton to Citta di Castello | 956.12 mi (1,538.73 km) |
| Clayton to Citta Sant'Angelo | 1,063.27 mi (1,711.16 km) |
| Clayton to Cittadella | 824.89 mi (1,327.53 km) |
| Clayton to Cittanova | 1,360.50 mi (2,189.51 km) |
