| Thornaby on Tees to Indianola (Iowa) | 4,048.00 mi (6,514.62 km) |
| Thornaby on Tees to Indio (California) | 5,221.52 mi (8,403.22 km) |
| Thornaby on Tees to Inglewood (California) | 5,273.63 mi (8,487.09 km) |
| Thornaby on Tees to Inkster (Michigan) | 3,631.97 mi (5,845.09 km) |
| Thornaby on Tees to Inver Grove Heights (Minnesota) | 3,857.20 mi (6,207.56 km) |
| Thornaby on Tees to Inwood (New York) | 3,348.18 mi (5,388.37 km) |
| Thornaby on Tees to Iona (Florida) | 4,379.65 mi (7,048.36 km) |
| Thornaby on Tees to Ionia (Michigan) | 3,663.85 mi (5,896.39 km) |
| Thornaby on Tees to Iowa City (Iowa) | 3,961.22 mi (6,374.97 km) |
| Thornaby on Tees to Irmo (South Carolina) | 3,955.29 mi (6,365.42 km) |
| Thornaby on Tees to Irondale (Alabama) | 4,194.34 mi (6,750.13 km) |
| Thornaby on Tees to Ironton (Ohio) | 3,790.59 mi (6,100.36 km) |
| Thornaby on Tees to Irvine (California) | 5,272.51 mi (8,485.29 km) |
| Thornaby on Tees to Irving (Texas) | 4,615.50 mi (7,427.94 km) |
| Thornaby on Tees to Isabela (Puerto Rico) | 4,215.54 mi (6,784.25 km) |
