| Tigard to Indianapolis (Indiana) | 1,886.66 mi (3,036.29 km) |
| Tigard to Indianola (Iowa) | 1,485.03 mi (2,389.92 km) |
| Tigard to Indio (California) | 878.98 mi (1,414.58 km) |
| Tigard to Inglewood (California) | 826.37 mi (1,329.91 km) |
| Tigard to Inkster (Michigan) | 1,958.35 mi (3,151.66 km) |
| Tigard to Inver Grove Heights (Minnesota) | 1,441.41 mi (2,319.72 km) |
| Tigard to Inwood (New York) | 2,460.23 mi (3,959.36 km) |
| Tigard to Iona (Florida) | 2,591.65 mi (4,170.86 km) |
| Tigard to Ionia (Michigan) | 1,858.43 mi (2,990.86 km) |
| Tigard to Iowa City (Iowa) | 1,576.63 mi (2,537.34 km) |
| Tigard to Irmo (South Carolina) | 2,313.50 mi (3,723.22 km) |
| Tigard to Irondale (Alabama) | 2,072.07 mi (3,334.68 km) |
| Tigard to Ironton (Ohio) | 2,091.38 mi (3,365.76 km) |
| Tigard to Irvine (California) | 853.92 mi (1,374.25 km) |
| Tigard to Irving (Texas) | 1,622.15 mi (2,610.60 km) |
