| Rickmansworth to Dixon (Illinois) | 4,002.17 mi (6,440.87 km) |
| Rickmansworth to Dobbs Ferry (New York) | 3,426.04 mi (5,513.67 km) |
| Rickmansworth to Doctor Phillips (Florida) | 4,332.21 mi (6,972.02 km) |
| Rickmansworth to Dodge City (Kansas) | 4,594.73 mi (7,394.50 km) |
| Rickmansworth to Dolton (Illinois) | 3,940.90 mi (6,342.27 km) |
| Rickmansworth to Donna (Texas) | 5,128.08 mi (8,252.85 km) |
| Rickmansworth to Dorado (Puerto Rico) | 4,192.96 mi (6,747.92 km) |
| Rickmansworth to Doral (Florida) | 4,416.90 mi (7,108.32 km) |
| Rickmansworth to Doraville (Georgia) | 4,177.53 mi (6,723.09 km) |
| Rickmansworth to Dothan (Alabama) | 4,355.60 mi (7,009.67 km) |
| Rickmansworth to Douglas (Arizona) | 5,279.78 mi (8,496.99 km) |
| Rickmansworth to Douglas (Georgia) | 4,237.07 mi (6,818.91 km) |
| Rickmansworth to Douglasville (Georgia) | 4,203.43 mi (6,764.76 km) |
| Rickmansworth to Dover (Delaware) | 3,574.68 mi (5,752.88 km) |
| Rickmansworth to Dover (New Hampshire) | 3,213.14 mi (5,171.05 km) |
