| Watford to Opovo | 1,054.52 mi (1,697.09 km) |
| Watford to Osecina | 1,047.67 mi (1,686.06 km) |
| Watford to Padinska Skela | 1,058.51 mi (1,703.50 km) |
| Watford to Pancevo | 1,069.98 mi (1,721.97 km) |
| Watford to Paracin | 1,140.97 mi (1,836.21 km) |
| Watford to Pecinci | 1,041.41 mi (1,676.00 km) |
| Watford to Petrovac na Mlavi | 1,120.76 mi (1,803.68 km) |
| Watford to Petrovaradin | 1,024.04 mi (1,648.03 km) |
| Watford to Pirot | 1,217.39 mi (1,959.20 km) |
| Watford to Plandiste | 1,076.41 mi (1,732.31 km) |
| Watford to Pozarevac | 1,102.02 mi (1,773.53 km) |
| Watford to Pozega | 1,086.46 mi (1,748.49 km) |
| Watford to Presevo | 1,216.28 mi (1,957.41 km) |
| Watford to Priboj | 1,077.27 mi (1,733.70 km) |
| Watford to Prijepolje | 1,083.91 mi (1,744.39 km) |
