| Watertown Town to Isabela (Puerto Rico) | 1,667.25 mi (2,683.17 km) |
| Watertown Town to Iselin (New Jersey) | 204.66 mi (329.37 km) |
| Watertown Town to Isla Vista (California) | 2,655.89 mi (4,274.25 km) |
| Watertown Town to Issaquah (Washington) | 2,467.58 mi (3,971.19 km) |
| Watertown Town to Ithaca (New York) | 271.71 mi (437.27 km) |
| Watertown Town to Ives Estates (Florida) | 1,243.22 mi (2,000.77 km) |
| Watertown Town to Jackson (Michigan) | 675.22 mi (1,086.66 km) |
| Watertown Town to Jackson (Mississippi) | 1,250.78 mi (2,012.93 km) |
| Watertown Town to Jackson (Missouri) | 1,036.00 mi (1,667.27 km) |
| Watertown Town to Jackson (Tennessee) | 1,052.69 mi (1,694.13 km) |
| Watertown Town to Jackson (Wyoming) | 1,985.91 mi (3,196.02 km) |
| Watertown Town to Jacksonville (Alabama) | 986.74 mi (1,588.00 km) |
| Watertown Town to Jacksonville (Arkansas) | 1,239.38 mi (1,994.58 km) |
| Watertown Town to Jacksonville (Florida) | 1,014.58 mi (1,632.82 km) |
| Watertown Town to Jacksonville (Illinois) | 1,007.24 mi (1,620.99 km) |
