| Didcot to Harrison (Wisconsin) | 3,821.06 mi (6,149.40 km) |
| Didcot to Harrisonburg (Virginia) | 3,713.26 mi (5,975.91 km) |
| Didcot to Hartford (Connecticut) | 3,314.60 mi (5,334.34 km) |
| Didcot to Hartford (Wisconsin) | 3,863.92 mi (6,218.38 km) |
| Didcot to Hartselle (Alabama) | 4,228.95 mi (6,805.84 km) |
| Didcot to Hartsville (Tennessee) | 4,102.88 mi (6,602.95 km) |
| Didcot to Harvey (Illinois) | 3,915.31 mi (6,301.08 km) |
| Didcot to Harvey (Louisiana) | 4,582.46 mi (7,374.76 km) |
| Didcot to Hasbrouck Heights (New Jersey) | 3,409.94 mi (5,487.78 km) |
| Didcot to Haslett (Michigan) | 3,738.07 mi (6,015.85 km) |
| Didcot to Hastings (Minnesota) | 3,964.02 mi (6,379.47 km) |
| Didcot to Hastings (Nebraska) | 4,364.73 mi (7,024.36 km) |
| Didcot to Hattiesburg (Mississippi) | 4,480.31 mi (7,210.36 km) |
| Didcot to Hauppauge (New York) | 3,376.36 mi (5,433.73 km) |
| Didcot to Havelock (North Carolina) | 3,794.81 mi (6,107.15 km) |
