| Watford to Caguas (Puerto Rico) | 4,198.45 mi (6,756.75 km) |
| Watford to Cahokia (Illinois) | 4,187.71 mi (6,739.47 km) |
| Watford to Calabasas (California) | 5,433.80 mi (8,744.86 km) |
| Watford to Caldwell (Idaho) | 4,833.86 mi (7,779.34 km) |
| Watford to Caledonia (Wisconsin) | 3,899.31 mi (6,275.34 km) |
| Watford to Calera (Alabama) | 4,318.65 mi (6,950.20 km) |
| Watford to Calexico (California) | 5,413.02 mi (8,711.41 km) |
| Watford to Calhoun (Georgia) | 4,178.64 mi (6,724.88 km) |
| Watford to California (Maryland) | 3,655.95 mi (5,883.68 km) |
| Watford to California City (California) | 5,350.04 mi (8,610.06 km) |
| Watford to Callaway (Florida) | 4,419.19 mi (7,112.00 km) |
| Watford to Calumet City (Illinois) | 3,941.94 mi (6,343.94 km) |
| Watford to Calverton (Maryland) | 3,640.11 mi (5,858.19 km) |
| Watford to Camano (Washington) | 4,739.70 mi (7,627.82 km) |
| Watford to Camarillo (California) | 5,440.44 mi (8,755.55 km) |
