| Watford to Indianola (Iowa) | 4,179.64 mi (6,726.48 km) |
| Watford to Indio (California) | 5,378.04 mi (8,655.12 km) |
| Watford to Inglewood (California) | 5,433.81 mi (8,744.87 km) |
| Watford to Inkster (Michigan) | 3,747.87 mi (6,031.61 km) |
| Watford to Inver Grove Heights (Minnesota) | 3,995.70 mi (6,430.46 km) |
| Watford to Inwood (New York) | 3,440.59 mi (5,537.10 km) |
| Watford to Iona (Florida) | 4,451.82 mi (7,164.52 km) |
| Watford to Ionia (Michigan) | 3,784.70 mi (6,090.89 km) |
| Watford to Iowa City (Iowa) | 4,090.04 mi (6,582.29 km) |
| Watford to Irmo (South Carolina) | 4,044.93 mi (6,509.69 km) |
| Watford to Irondale (Alabama) | 4,294.57 mi (6,911.45 km) |
| Watford to Ironton (Ohio) | 3,895.15 mi (6,268.64 km) |
| Watford to Irvine (California) | 5,431.44 mi (8,741.05 km) |
| Watford to Irving (Texas) | 4,735.63 mi (7,621.25 km) |
| Watford to Isabela (Puerto Rico) | 4,226.24 mi (6,801.47 km) |
