| Watford to Cassina de' Pecchi | 614.63 mi (989.14 km) |
| Watford to Cassino | 970.84 mi (1,562.41 km) |
| Watford to Castagneto Carducci | 778.24 mi (1,252.46 km) |
| Watford to Castano Primo | 593.43 mi (955.04 km) |
| Watford to Castel Bolognese | 756.61 mi (1,217.64 km) |
| Watford to Castel Gandolfo | 919.70 mi (1,480.11 km) |
| Watford to Castel Goffredo | 662.72 mi (1,066.54 km) |
| Watford to Castel Maggiore | 729.36 mi (1,173.79 km) |
| Watford to Castel Mella | 641.71 mi (1,032.73 km) |
| Watford to Castel San Giorgio | 1,037.68 mi (1,669.99 km) |
| Watford to Castel San Giovanni | 640.77 mi (1,031.21 km) |
| Watford to Castel San Pietro Terme | 745.06 mi (1,199.06 km) |
| Watford to Castel Volturno | 997.89 mi (1,605.95 km) |
| Watford to Castelbuono | 1,180.29 mi (1,899.49 km) |
| Watford to Casteldaccia | 1,157.27 mi (1,862.44 km) |
