| Watford to Oak Harbor (Washington) | 4,737.65 mi (7,624.52 km) |
| Watford to Oak Hills (Oregon) | 4,901.05 mi (7,887.48 km) |
| Watford to Oak Lawn (Illinois) | 3,944.97 mi (6,348.81 km) |
| Watford to Oak Park (California) | 5,434.20 mi (8,745.50 km) |
| Watford to Oak Park (Illinois) | 3,938.31 mi (6,338.09 km) |
| Watford to Oak Park (Michigan) | 3,735.03 mi (6,010.95 km) |
| Watford to Oak Ridge (Florida) | 4,330.52 mi (6,969.30 km) |
| Watford to Oak Ridge (New Jersey) | 3,453.19 mi (5,557.38 km) |
| Watford to Oak Ridge (Tennessee) | 4,081.44 mi (6,568.44 km) |
| Watford to Oakdale (California) | 5,292.68 mi (8,517.74 km) |
| Watford to Oakdale (Minnesota) | 3,984.62 mi (6,412.62 km) |
| Watford to Oakland (California) | 5,331.81 mi (8,580.72 km) |
| Watford to Oakland (New Jersey) | 3,442.82 mi (5,540.69 km) |
| Watford to Oakland Park (Florida) | 4,392.71 mi (7,069.39 km) |
| Watford to Oakleaf Plantation (Florida) | 4,263.46 mi (6,861.38 km) |
