| Watford to Orangevale (California) | 5,250.36 mi (8,449.64 km) |
| Watford to Orchards (Washington) | 4,884.18 mi (7,860.33 km) |
| Watford to Orcutt (California) | 5,446.82 mi (8,765.81 km) |
| Watford to Oregon (Ohio) | 3,781.39 mi (6,085.57 km) |
| Watford to Oregon (Wisconsin) | 3,950.22 mi (6,357.26 km) |
| Watford to Oregon City (Oregon) | 4,905.79 mi (7,895.10 km) |
| Watford to Orem (Utah) | 4,864.63 mi (7,828.86 km) |
| Watford to Orinda (California) | 5,325.45 mi (8,570.48 km) |
| Watford to Orland Park (Illinois) | 3,954.09 mi (6,363.49 km) |
| Watford to Orlando (Florida) | 4,326.94 mi (6,963.54 km) |
| Watford to Ormond Beach (Florida) | 4,276.12 mi (6,881.75 km) |
| Watford to Oro Valley (Arizona) | 5,273.65 mi (8,487.12 km) |
| Watford to Oroville (California) | 5,213.55 mi (8,390.39 km) |
| Watford to Oshkosh (Wisconsin) | 3,868.66 mi (6,226.00 km) |
| Watford to Oskaloosa (Iowa) | 4,148.82 mi (6,676.88 km) |
