| Middlesbrough to Indianola (Iowa) | 4,049.75 mi (6,517.45 km) |
| Middlesbrough to Indio (California) | 5,222.82 mi (8,405.31 km) |
| Middlesbrough to Inglewood (California) | 5,274.85 mi (8,489.06 km) |
| Middlesbrough to Inkster (Michigan) | 3,633.96 mi (5,848.29 km) |
| Middlesbrough to Inver Grove Heights (Minnesota) | 3,858.85 mi (6,210.21 km) |
| Middlesbrough to Inwood (New York) | 3,350.45 mi (5,392.03 km) |
| Middlesbrough to Iona (Florida) | 4,382.10 mi (7,052.30 km) |
| Middlesbrough to Ionia (Michigan) | 3,665.77 mi (5,899.49 km) |
| Middlesbrough to Iowa City (Iowa) | 3,963.02 mi (6,377.87 km) |
| Middlesbrough to Irmo (South Carolina) | 3,957.58 mi (6,369.11 km) |
| Middlesbrough to Irondale (Alabama) | 4,196.51 mi (6,753.63 km) |
| Middlesbrough to Ironton (Ohio) | 3,792.71 mi (6,103.78 km) |
| Middlesbrough to Irvine (California) | 5,273.76 mi (8,487.30 km) |
| Middlesbrough to Irving (Texas) | 4,617.42 mi (7,431.02 km) |
| Middlesbrough to Isabela (Puerto Rico) | 4,218.38 mi (6,788.83 km) |
