| Portage to Isabela (Puerto Rico) | 1,966.94 mi (3,165.48 km) |
| Portage to Iselin (New Jersey) | 594.70 mi (957.07 km) |
| Portage to Isla Vista (California) | 1,920.01 mi (3,089.96 km) |
| Portage to Issaquah (Washington) | 1,805.42 mi (2,905.54 km) |
| Portage to Ithaca (New York) | 464.32 mi (747.25 km) |
| Portage to Ives Estates (Florida) | 1,163.09 mi (1,871.81 km) |
| Portage to Jackson (Michigan) | 60.80 mi (97.84 km) |
| Portage to Jackson (Mississippi) | 728.39 mi (1,172.24 km) |
| Portage to Jackson (Missouri) | 396.68 mi (638.39 km) |
| Portage to Jackson (Tennessee) | 484.66 mi (779.98 km) |
| Portage to Jackson (Wyoming) | 1,274.13 mi (2,050.51 km) |
| Portage to Jacksonville (Alabama) | 579.84 mi (933.17 km) |
| Portage to Jacksonville (Arkansas) | 616.53 mi (992.21 km) |
| Portage to Jacksonville (Florida) | 848.24 mi (1,365.11 km) |
| Portage to Jacksonville (Illinois) | 296.20 mi (476.68 km) |
