| Watford to Chivasso | 585.52 mi (942.30 km) |
| Watford to Ciampino | 915.16 mi (1,472.80 km) |
| Watford to Cicciano | 1,022.35 mi (1,645.31 km) |
| Watford to Cingoli | 852.80 mi (1,372.45 km) |
| Watford to Cinisello Balsamo | 608.01 mi (978.49 km) |
| Watford to Cinisi | 1,138.23 mi (1,831.81 km) |
| Watford to Cirie | 574.67 mi (924.84 km) |
| Watford to Ciro Marina | 1,194.23 mi (1,921.93 km) |
| Watford to Cislago | 594.75 mi (957.15 km) |
| Watford to Cisterna di Latina | 933.79 mi (1,502.80 km) |
| Watford to Cisternino | 1,133.19 mi (1,823.69 km) |
| Watford to Citta di Castello | 815.10 mi (1,311.78 km) |
| Watford to Citta Sant'Angelo | 924.57 mi (1,487.95 km) |
| Watford to Cittadella | 692.20 mi (1,113.99 km) |
| Watford to Cittanova | 1,216.26 mi (1,957.39 km) |
