| Watford to Joliet (Illinois) | 3,969.19 mi (6,387.80 km) |
| Watford to Jonesboro (Arkansas) | 4,341.62 mi (6,987.16 km) |
| Watford to Joplin (Missouri) | 4,426.33 mi (7,123.48 km) |
| Watford to Joppatowne (Maryland) | 3,599.64 mi (5,793.06 km) |
| Watford to Juana Díaz (Puerto Rico) | 4,227.65 mi (6,803.75 km) |
| Watford to Junction City (Kansas) | 4,416.20 mi (7,107.19 km) |
| Watford to Juneau (Alaska) | 4,397.90 mi (7,077.73 km) |
| Watford to Jupiter (Florida) | 4,353.59 mi (7,006.43 km) |
| Watford to Jupiter Farms (Florida) | 4,357.96 mi (7,013.46 km) |
| Watford to Jurupa Valley (California) | 5,403.15 mi (8,695.53 km) |
| Watford to Justice (Illinois) | 3,946.42 mi (6,351.14 km) |
| Watford to Kahului (Hawaii) | 7,220.39 mi (11,620.09 km) |
| Watford to Kailua (Hawaii) | 7,206.48 mi (11,597.71 km) |
| Watford to Kalamazoo (Michigan) | 3,836.37 mi (6,174.04 km) |
| Watford to Kalispell (Montana) | 4,515.06 mi (7,266.28 km) |
