| Twickenham to Indianola (Iowa) | 4,189.06 mi (6,741.65 km) |
| Twickenham to Indio (California) | 5,389.13 mi (8,672.97 km) |
| Twickenham to Inglewood (California) | 5,445.15 mi (8,763.13 km) |
| Twickenham to Inkster (Michigan) | 3,756.23 mi (6,045.07 km) |
| Twickenham to Inver Grove Heights (Minnesota) | 4,005.61 mi (6,446.41 km) |
| Twickenham to Inwood (New York) | 3,447.36 mi (5,548.00 km) |
| Twickenham to Iona (Florida) | 4,457.06 mi (7,172.94 km) |
| Twickenham to Ionia (Michigan) | 3,793.41 mi (6,104.90 km) |
| Twickenham to Iowa City (Iowa) | 4,099.28 mi (6,597.15 km) |
| Twickenham to Irmo (South Carolina) | 4,051.44 mi (6,520.16 km) |
| Twickenham to Irondale (Alabama) | 4,301.79 mi (6,923.07 km) |
| Twickenham to Ironton (Ohio) | 3,902.71 mi (6,280.81 km) |
| Twickenham to Irvine (California) | 5,442.70 mi (8,759.17 km) |
| Twickenham to Irving (Texas) | 4,744.20 mi (7,635.05 km) |
| Twickenham to Isabela (Puerto Rico) | 4,227.17 mi (6,802.97 km) |
