| Didcot to Indianola (Iowa) | 4,150.06 mi (6,678.87 km) |
| Didcot to Indio (California) | 5,352.33 mi (8,613.74 km) |
| Didcot to Inglewood (California) | 5,408.83 mi (8,704.67 km) |
| Didcot to Inkster (Michigan) | 3,716.44 mi (5,981.03 km) |
| Didcot to Inver Grove Heights (Minnesota) | 3,967.12 mi (6,384.46 km) |
| Didcot to Inwood (New York) | 3,407.05 mi (5,483.11 km) |
| Didcot to Iona (Florida) | 4,416.85 mi (7,108.23 km) |
| Didcot to Ionia (Michigan) | 3,753.83 mi (6,041.20 km) |
| Didcot to Iowa City (Iowa) | 4,060.10 mi (6,534.09 km) |
| Didcot to Irmo (South Carolina) | 4,011.10 mi (6,455.24 km) |
| Didcot to Irondale (Alabama) | 4,261.55 mi (6,858.30 km) |
| Didcot to Ironton (Ohio) | 3,862.57 mi (6,216.20 km) |
| Didcot to Irvine (California) | 5,406.20 mi (8,700.44 km) |
| Didcot to Irving (Texas) | 4,704.53 mi (7,571.20 km) |
| Didcot to Isabela (Puerto Rico) | 4,189.84 mi (6,742.89 km) |
