| Gresham to Indianola (Iowa) | 1,468.46 mi (2,363.26 km) |
| Gresham to Indio (California) | 876.91 mi (1,411.24 km) |
| Gresham to Inglewood (California) | 826.59 mi (1,330.26 km) |
| Gresham to Inkster (Michigan) | 1,941.14 mi (3,123.96 km) |
| Gresham to Inver Grove Heights (Minnesota) | 1,424.14 mi (2,291.93 km) |
| Gresham to Inwood (New York) | 2,442.91 mi (3,931.49 km) |
| Gresham to Iona (Florida) | 2,577.22 mi (4,147.63 km) |
| Gresham to Ionia (Michigan) | 1,841.19 mi (2,963.12 km) |
| Gresham to Iowa City (Iowa) | 1,559.87 mi (2,510.36 km) |
| Gresham to Irmo (South Carolina) | 2,297.42 mi (3,697.35 km) |
| Gresham to Irondale (Alabama) | 2,056.75 mi (3,310.02 km) |
| Gresham to Ironton (Ohio) | 2,074.65 mi (3,338.83 km) |
| Gresham to Irvine (California) | 853.58 mi (1,373.71 km) |
| Gresham to Irving (Texas) | 1,609.09 mi (2,589.59 km) |
| Gresham to Isabela (Puerto Rico) | 3,653.30 mi (5,879.41 km) |
