| Watford to Montana | 1,232.74 mi (1,983.90 km) |
| Watford to Nova Zagora | 1,384.18 mi (2,227.63 km) |
| Watford to Novi Iskar | 1,262.91 mi (2,032.45 km) |
| Watford to Novi Pazar | 1,399.14 mi (2,251.70 km) |
| Watford to Omurtag | 1,376.32 mi (2,214.97 km) |
| Watford to Panagyurishte | 1,309.16 mi (2,106.88 km) |
| Watford to Parvomay | 1,367.88 mi (2,201.38 km) |
| Watford to Pavlikeni | 1,325.40 mi (2,133.03 km) |
| Watford to Pazardzhik | 1,327.89 mi (2,137.03 km) |
| Watford to Pernik | 1,258.58 mi (2,025.49 km) |
| Watford to Peshtera | 1,333.66 mi (2,146.32 km) |
| Watford to Petrich | 1,318.13 mi (2,121.32 km) |
| Watford to Pleven | 1,289.98 mi (2,076.02 km) |
| Watford to Plovdiv | 1,346.85 mi (2,167.54 km) |
| Watford to Pomorie | 1,447.18 mi (2,329.01 km) |
