| Didcot to Dumas (Texas) | 4,737.18 mi (7,623.76 km) |
| Didcot to Dumont (New Jersey) | 3,403.01 mi (5,476.62 km) |
| Didcot to Duncan (Oklahoma) | 4,654.42 mi (7,490.56 km) |
| Didcot to Duncanville (Texas) | 4,713.25 mi (7,585.24 km) |
| Didcot to Dundalk (Maryland) | 3,578.61 mi (5,759.21 km) |
| Didcot to Dunedin (Florida) | 4,375.24 mi (7,041.26 km) |
| Didcot to Dunkirk (New York) | 3,551.72 mi (5,715.93 km) |
| Didcot to Dunmore (Pennsylvania) | 3,448.49 mi (5,549.81 km) |
| Didcot to Dunwoody (Georgia) | 4,146.66 mi (6,673.40 km) |
| Didcot to Durango (Colorado) | 4,874.19 mi (7,844.26 km) |
| Didcot to Durant (Oklahoma) | 4,623.87 mi (7,441.40 km) |
| Didcot to Durham (North Carolina) | 3,827.74 mi (6,160.15 km) |
| Didcot to Dyer (Indiana) | 3,914.91 mi (6,300.44 km) |
| Didcot to Dyersburg (Tennessee) | 4,247.59 mi (6,835.84 km) |
| Didcot to Eagan (Minnesota) | 3,971.24 mi (6,391.09 km) |
