| Watford to Lastra a Signa | 761.63 mi (1,225.72 km) |
| Watford to Laterza | 1,116.24 mi (1,796.42 km) |
| Watford to Latiano | 1,153.41 mi (1,856.23 km) |
| Watford to Latina | 942.95 mi (1,517.53 km) |
| Watford to Latisana | 735.78 mi (1,184.12 km) |
| Watford to Lauria Inferiore | 1,114.47 mi (1,793.57 km) |
| Watford to Lavagna | 676.71 mi (1,089.06 km) |
| Watford to Lavello | 1,060.21 mi (1,706.24 km) |
| Watford to Laveno-Mombello | 570.29 mi (917.79 km) |
| Watford to Lavis | 646.12 mi (1,039.82 km) |
| Watford to Lecce | 1,178.69 mi (1,896.92 km) |
| Watford to Lecco | 599.07 mi (964.11 km) |
| Watford to Legnago | 696.75 mi (1,121.31 km) |
| Watford to Legnano | 596.86 mi (960.55 km) |
| Watford to Legnaro | 712.62 mi (1,146.84 km) |
