| Watertown Town to Hoyo de Manzanares | 3,389.63 mi (5,455.07 km) |
| Watertown Town to Huelva | 3,345.74 mi (5,384.44 km) |
| Watertown Town to Huercal de Almeria | 3,577.50 mi (5,757.43 km) |
| Watertown Town to Huercal-Overa | 3,585.08 mi (5,769.63 km) |
| Watertown Town to Huesca | 3,506.82 mi (5,643.69 km) |
| Watertown Town to Huetor Vega | 3,513.76 mi (5,654.86 km) |
| Watertown Town to Huetor-Tajar | 3,489.02 mi (5,615.04 km) |
| Watertown Town to Humanes de Madrid | 3,403.62 mi (5,477.60 km) |
| Watertown Town to Ibi | 3,609.27 mi (5,808.56 km) |
| Watertown Town to Ibiza | 3,695.14 mi (5,946.76 km) |
| Watertown Town to Icod de los Vinos | 3,161.00 mi (5,087.14 km) |
| Watertown Town to Igualada | 3,617.70 mi (5,822.13 km) |
| Watertown Town to Illescas | 3,407.50 mi (5,483.85 km) |
| Watertown Town to Inca | 3,737.94 mi (6,015.63 km) |
| Watertown Town to Ingenio | 3,241.87 mi (5,217.29 km) |
