| Watford to Carmignano | 756.31 mi (1,217.16 km) |
| Watford to Carovigno | 1,143.13 mi (1,839.68 km) |
| Watford to Carpenedolo | 657.95 mi (1,058.87 km) |
| Watford to Carpi | 702.15 mi (1,129.99 km) |
| Watford to Carrara | 713.22 mi (1,147.82 km) |
| Watford to Carugate | 611.84 mi (984.66 km) |
| Watford to Casal di Principe | 1,006.66 mi (1,620.07 km) |
| Watford to Casale Monferrato | 605.76 mi (974.88 km) |
| Watford to Casale sul Sile | 714.58 mi (1,150.00 km) |
| Watford to Casalecchio di Reno | 730.72 mi (1,175.98 km) |
| Watford to Casalgrande | 707.25 mi (1,138.21 km) |
| Watford to Casalmaggiore | 676.23 mi (1,088.28 km) |
| Watford to Casalnuovo di Napoli | 1,019.09 mi (1,640.07 km) |
| Watford to Casalpusterlengo | 641.18 mi (1,031.88 km) |
| Watford to Casaluce | 1,009.72 mi (1,624.99 km) |
