| Cities | Distance |
|---|---|
| Watford to Oswaldtwistle | 166.74 mi (268.34 km) |
| Watford to Oswestry | 139.87 mi (225.10 km) |
| Watford to Otley | 164.55 mi (264.82 km) |
| Watford to Ovenden | 157.05 mi (252.75 km) |
| Watford to Oxford | 37.52 mi (60.38 km) |
| Watford to Oxted | 32.21 mi (51.84 km) |
| Watford to Padbury | 32.27 mi (51.93 km) |
| Watford to Padiham | 168.29 mi (270.84 km) |
| Watford to Paignton | 161.30 mi (259.59 km) |
| Watford to Paisley | 332.91 mi (535.77 km) |
| Watford to Palmers Green | 12.55 mi (20.20 km) |
| Watford to Parkstone | 93.78 mi (150.92 km) |
| Watford to Partick | 332.14 mi (534.53 km) |
| Watford to Patcham | 55.68 mi (89.60 km) |
| Watford to Peebles | 298.85 mi (480.95 km) |