| Williamstown to Isabela (Puerto Rico) | 1,539.08 mi (2,476.92 km) |
| Williamstown to Iselin (New Jersey) | 70.26 mi (113.08 km) |
| Williamstown to Isla Vista (California) | 2,475.75 mi (3,984.34 km) |
| Williamstown to Issaquah (Washington) | 2,377.81 mi (3,826.72 km) |
| Williamstown to Ithaca (New York) | 206.36 mi (332.11 km) |
| Williamstown to Ives Estates (Florida) | 994.73 mi (1,600.86 km) |
| Williamstown to Jackson (Michigan) | 522.13 mi (840.29 km) |
| Williamstown to Jackson (Mississippi) | 990.17 mi (1,593.53 km) |
| Williamstown to Jackson (Missouri) | 807.97 mi (1,300.31 km) |
| Williamstown to Jackson (Tennessee) | 806.39 mi (1,297.76 km) |
| Williamstown to Jackson (Wyoming) | 1,853.96 mi (2,983.66 km) |
| Williamstown to Jacksonville (Alabama) | 720.88 mi (1,160.15 km) |
| Williamstown to Jacksonville (Arkansas) | 997.73 mi (1,605.70 km) |
| Williamstown to Jacksonville (Florida) | 748.71 mi (1,204.94 km) |
| Williamstown to Jacksonville (Illinois) | 809.79 mi (1,303.23 km) |
