| Watford to Casamassima | 1,103.96 mi (1,776.65 km) |
| Watford to Casandrino | 1,014.96 mi (1,633.41 km) |
| Watford to Casapulla | 1,008.81 mi (1,623.52 km) |
| Watford to Casarano | 1,195.82 mi (1,924.48 km) |
| Watford to Casatenovo | 603.66 mi (971.49 km) |
| Watford to Casciana Terme | 759.12 mi (1,221.69 km) |
| Watford to Cascina | 748.58 mi (1,204.73 km) |
| Watford to Caselle Torinese | 579.22 mi (932.16 km) |
| Watford to Caserta | 1,010.44 mi (1,626.14 km) |
| Watford to Casier | 711.11 mi (1,144.43 km) |
| Watford to Casorate Primo | 613.54 mi (987.40 km) |
| Watford to Casoria | 1,018.38 mi (1,638.92 km) |
| Watford to Cassano al Ionio | 1,144.87 mi (1,842.48 km) |
| Watford to Cassano d'Adda | 618.75 mi (995.78 km) |
| Watford to Cassano delle Murge | 1,102.15 mi (1,773.74 km) |
