| Watertown Town to Hillcrest Heights (Maryland) | 389.36 mi (626.61 km) |
| Watertown Town to Hilliard (Ohio) | 642.73 mi (1,034.38 km) |
| Watertown Town to Hillsboro (Oregon) | 2,539.08 mi (4,086.25 km) |
| Watertown Town to Hillsborough (California) | 2,689.70 mi (4,328.65 km) |
| Watertown Town to Hillsborough (New Jersey) | 221.25 mi (356.07 km) |
| Watertown Town to Hilo (Hawaii) | 5,008.64 mi (8,060.63 km) |
| Watertown Town to Hilton Head Island (South Carolina) | 877.20 mi (1,411.72 km) |
| Watertown Town to Hinesville (Georgia) | 926.70 mi (1,491.38 km) |
| Watertown Town to Hinsdale (Illinois) | 858.40 mi (1,381.46 km) |
| Watertown Town to Hobart (Indiana) | 828.07 mi (1,332.64 km) |
| Watertown Town to Hobbs (New Mexico) | 1,860.93 mi (2,994.87 km) |
| Watertown Town to Hobe Sound (Florida) | 1,171.48 mi (1,885.31 km) |
| Watertown Town to Hoboken (New Jersey) | 185.25 mi (298.14 km) |
| Watertown Town to Hockessin (Delaware) | 294.83 mi (474.48 km) |
| Watertown Town to Hoffman Estates (Illinois) | 867.15 mi (1,395.55 km) |
