| Watford to Cutrofiano | 1,191.83 mi (1,918.07 km) |
| Watford to Dalmine | 615.70 mi (990.87 km) |
| Watford to Deruta | 845.70 mi (1,361.02 km) |
| Watford to Desenzano del Garda | 656.44 mi (1,056.43 km) |
| Watford to Desio | 604.62 mi (973.05 km) |
| Watford to Dolianova | 964.53 mi (1,552.27 km) |
| Watford to Dolo | 713.00 mi (1,147.46 km) |
| Watford to Domodossola | 549.05 mi (883.61 km) |
| Watford to Dorgali | 917.41 mi (1,476.43 km) |
| Watford to Dueville | 684.52 mi (1,101.63 km) |
| Watford to Eboli | 1,058.32 mi (1,703.21 km) |
| Watford to Elmas | 968.81 mi (1,559.15 km) |
| Watford to Empoli | 759.45 mi (1,222.22 km) |
| Watford to Enna | 1,207.09 mi (1,942.63 km) |
| Watford to Eraclea | 728.26 mi (1,172.02 km) |
