| Watford to Kolarovo | 857.44 mi (1,379.91 km) |
| Watford to Komarno | 867.46 mi (1,396.04 km) |
| Watford to Kosice | 975.05 mi (1,569.19 km) |
| Watford to Krompachy | 954.33 mi (1,535.84 km) |
| Watford to Kysucke Nove Mesto | 856.41 mi (1,378.25 km) |
| Watford to Levice | 875.06 mi (1,408.27 km) |
| Watford to Levoca | 939.55 mi (1,512.06 km) |
| Watford to Liptovsky Mikulas | 896.03 mi (1,442.02 km) |
| Watford to Lucenec | 917.20 mi (1,476.09 km) |
| Watford to Malacky | 801.82 mi (1,290.41 km) |
| Watford to Martin | 867.37 mi (1,395.90 km) |
| Watford to Michalovce | 1,002.52 mi (1,613.41 km) |
| Watford to Modra | 816.92 mi (1,314.71 km) |
| Watford to Moldava nad Bodvou | 967.03 mi (1,556.28 km) |
| Watford to Myjava | 816.97 mi (1,314.78 km) |
