| Didcot to Hanahan (South Carolina) | 4,017.96 mi (6,466.29 km) |
| Didcot to Hanford (California) | 5,315.08 mi (8,553.79 km) |
| Didcot to Hannibal (Missouri) | 4,148.03 mi (6,675.61 km) |
| Didcot to Hanover (Pennsylvania) | 3,574.50 mi (5,752.60 km) |
| Didcot to Hanover Park (Illinois) | 3,916.80 mi (6,303.48 km) |
| Didcot to Happy Valley (Oregon) | 4,877.81 mi (7,850.07 km) |
| Didcot to Harker Heights (Texas) | 4,823.98 mi (7,763.45 km) |
| Didcot to Harlingen (Texas) | 5,081.47 mi (8,177.84 km) |
| Didcot to Harper Woods (Michigan) | 3,694.92 mi (5,946.40 km) |
| Didcot to Harrisburg (North Carolina) | 3,930.94 mi (6,326.24 km) |
| Didcot to Harrisburg (Pennsylvania) | 3,549.97 mi (5,713.13 km) |
| Didcot to Harrison (Arkansas) | 4,384.08 mi (7,055.50 km) |
| Didcot to Harrison (New Jersey) | 3,418.29 mi (5,501.21 km) |
| Didcot to Harrison (New York) | 3,388.49 mi (5,453.25 km) |
| Didcot to Harrison (Ohio) | 3,912.80 mi (6,297.04 km) |
