| Watford to Lasko | 802.99 mi (1,292.29 km) |
| Watford to Lenart v Slovenskih Goricah | 811.19 mi (1,305.48 km) |
| Watford to Lendava | 836.74 mi (1,346.61 km) |
| Watford to Litija | 789.80 mi (1,271.06 km) |
| Watford to Ljubljana | 778.21 mi (1,252.40 km) |
| Watford to Ljubno | 780.10 mi (1,255.44 km) |
| Watford to Ljutomer | 828.27 mi (1,332.98 km) |
| Watford to Logatec | 772.86 mi (1,243.79 km) |
| Watford to Lovrenc na Pohorju | 794.44 mi (1,278.52 km) |
| Watford to Luce | 775.65 mi (1,248.28 km) |
| Watford to Lukovica | 780.77 mi (1,256.53 km) |
| Watford to Majsperk | 815.42 mi (1,312.30 km) |
| Watford to Makole | 813.97 mi (1,309.97 km) |
| Watford to Maribor | 804.25 mi (1,294.32 km) |
| Watford to Markovci | 821.71 mi (1,322.42 km) |
