| Watford to Curtea de Arges | 1,227.69 mi (1,975.77 km) |
| Watford to Dabuleni | 1,252.78 mi (2,016.16 km) |
| Watford to Darabani | 1,216.77 mi (1,958.20 km) |
| Watford to Darmanesti | 1,263.30 mi (2,033.08 km) |
| Watford to Dej | 1,127.72 mi (1,814.89 km) |
| Watford to Deva | 1,128.17 mi (1,815.61 km) |
| Watford to Dolhasca | 1,237.70 mi (1,991.88 km) |
| Watford to Dorohoi | 1,214.47 mi (1,954.50 km) |
| Watford to Draganesti-Olt | 1,256.77 mi (2,022.58 km) |
| Watford to Dragasani | 1,227.30 mi (1,975.15 km) |
| Watford to Drobeta-Turnu Severin | 1,161.50 mi (1,869.25 km) |
| Watford to Fagaras | 1,216.13 mi (1,957.17 km) |
| Watford to Falticeni | 1,223.64 mi (1,969.25 km) |
| Watford to Fetesti | 1,385.75 mi (2,230.14 km) |
| Watford to Filiasi | 1,206.23 mi (1,941.24 km) |
