| Holyhead to Castelletto sopra Ticino | 791.07 mi (1,273.11 km) |
| Holyhead to Castelli Calepio | 838.13 mi (1,348.84 km) |
| Holyhead to Castelnovo ne' Monti | 914.72 mi (1,472.09 km) |
| Holyhead to Castelnuovo Berardenga | 1,007.28 mi (1,621.06 km) |
| Holyhead to Castelnuovo di Porto | 1,103.87 mi (1,776.51 km) |
| Holyhead to Castelnuovo di Verona | 877.86 mi (1,412.77 km) |
| Holyhead to Castelnuovo Rangone | 926.81 mi (1,491.56 km) |
| Holyhead to Castelvetrano | 1,362.68 mi (2,193.02 km) |
| Holyhead to Castelvetro di Modena | 929.88 mi (1,496.50 km) |
| Holyhead to Castenaso | 947.22 mi (1,524.40 km) |
| Holyhead to Castenedolo | 859.72 mi (1,383.58 km) |
| Holyhead to Castiglion Fiorentino | 1,021.28 mi (1,643.59 km) |
| Holyhead to Castiglione del Lago | 1,036.19 mi (1,667.58 km) |
| Holyhead to Castiglione delle Stiviere | 870.17 mi (1,400.40 km) |
| Holyhead to Castrolibero | 1,377.07 mi (2,216.18 km) |
