| Clayton to Castelletto sopra Ticino | 725.14 mi (1,167.01 km) |
| Clayton to Castelli Calepio | 766.79 mi (1,234.04 km) |
| Clayton to Castelnovo ne' Monti | 847.56 mi (1,364.02 km) |
| Clayton to Castelnuovo Berardenga | 940.58 mi (1,513.71 km) |
| Clayton to Castelnuovo di Porto | 1,038.29 mi (1,670.97 km) |
| Clayton to Castelnuovo di Verona | 803.98 mi (1,293.88 km) |
| Clayton to Castelnuovo Rangone | 856.81 mi (1,378.90 km) |
| Clayton to Castelvetrano | 1,310.90 mi (2,109.69 km) |
| Clayton to Castelvetro di Modena | 860.06 mi (1,384.13 km) |
| Clayton to Castenaso | 875.24 mi (1,408.56 km) |
| Clayton to Castenedolo | 787.58 mi (1,267.49 km) |
| Clayton to Castiglion Fiorentino | 952.92 mi (1,533.58 km) |
| Clayton to Castiglione del Lago | 968.22 mi (1,558.20 km) |
| Clayton to Castiglione delle Stiviere | 797.56 mi (1,283.54 km) |
| Clayton to Castrolibero | 1,308.22 mi (2,105.37 km) |
