| Watford to Hisarcik | 1,655.36 mi (2,664.04 km) |
| Watford to Hizan | 2,250.22 mi (3,621.39 km) |
| Watford to Hopa | 2,077.36 mi (3,343.19 km) |
| Watford to Huyuk | 1,810.41 mi (2,913.57 km) |
| Watford to Idil | 2,266.08 mi (3,646.91 km) |
| Watford to Igdir | 2,248.31 mi (3,618.30 km) |
| Watford to Ihsaniye | 1,713.19 mi (2,757.11 km) |
| Watford to Ilic | 2,034.10 mi (3,273.56 km) |
| Watford to Ilica | 2,121.72 mi (3,414.57 km) |
| Watford to Incesu | 1,927.86 mi (3,102.59 km) |
| Watford to Incirliova | 1,660.47 mi (2,672.27 km) |
| Watford to Inebolu | 1,728.31 mi (2,781.45 km) |
| Watford to Inegol | 1,629.64 mi (2,622.65 km) |
| Watford to Ipsala | 1,465.76 mi (2,358.91 km) |
| Watford to Iskenderun | 2,060.58 mi (3,316.18 km) |
