| Watford to Agen | 516.89 mi (831.85 km) |
| Watford to Aigues-Mortes | 598.02 mi (962.41 km) |
| Watford to Aire-sur-la-Lys | 139.92 mi (225.18 km) |
| Watford to Aix-en-Provence | 623.63 mi (1,003.64 km) |
| Watford to Aix-les-Bains | 502.44 mi (808.61 km) |
| Watford to Aizenay | 343.96 mi (553.56 km) |
| Watford to Ajaccio | 797.66 mi (1,283.71 km) |
| Watford to Albert | 175.30 mi (282.12 km) |
| Watford to Albertville | 515.88 mi (830.24 km) |
| Watford to Albi | 546.62 mi (879.70 km) |
| Watford to Alencon | 223.84 mi (360.23 km) |
| Watford to Ales | 559.63 mi (900.64 km) |
| Watford to Alfortville | 233.00 mi (374.97 km) |
| Watford to Allauch | 636.38 mi (1,024.15 km) |
| Watford to Allonnes | 255.91 mi (411.84 km) |
