| Didcot to Haverhill (Massachusetts) | 3,207.11 mi (5,161.35 km) |
| Didcot to Havre de Grace (Maryland) | 3,550.75 mi (5,714.39 km) |
| Didcot to Hawaiian Gardens (California) | 5,407.21 mi (8,702.07 km) |
| Didcot to Hawaiian Paradise Park (Hawaii) | 7,267.88 mi (11,696.52 km) |
| Didcot to Hawthorne (California) | 5,411.32 mi (8,708.68 km) |
| Didcot to Hawthorne (New Jersey) | 3,409.24 mi (5,486.65 km) |
| Didcot to Hayden (Idaho) | 4,588.48 mi (7,384.44 km) |
| Didcot to Hayesville (Oregon) | 4,916.63 mi (7,912.56 km) |
| Didcot to Hays (Kansas) | 4,484.95 mi (7,217.82 km) |
| Didcot to Haysville (Kansas) | 4,478.86 mi (7,208.02 km) |
| Didcot to Hayward (California) | 5,314.08 mi (8,552.19 km) |
| Didcot to Hazel Crest (Illinois) | 3,918.35 mi (6,305.98 km) |
| Didcot to Hazel Dell (Washington) | 4,867.88 mi (7,834.10 km) |
| Didcot to Hazel Park (Michigan) | 3,700.47 mi (5,955.32 km) |
| Didcot to Hazelwood (Missouri) | 4,153.72 mi (6,684.76 km) |
