| Hercules to Dixon (California) | 38.40 mi (61.80 km) |
| Hercules to Dixon (Illinois) | 1,746.05 mi (2,809.99 km) |
| Hercules to Dobbs Ferry (New York) | 2,554.62 mi (4,111.27 km) |
| Hercules to Doctor Phillips (Florida) | 2,425.95 mi (3,904.19 km) |
| Hercules to Dodge City (Kansas) | 1,209.92 mi (1,947.19 km) |
| Hercules to Dolton (Illinois) | 1,843.70 mi (2,967.15 km) |
| Hercules to Donna (Texas) | 1,629.31 mi (2,622.12 km) |
| Hercules to Dorado (Puerto Rico) | 3,605.54 mi (5,802.56 km) |
| Hercules to Doral (Florida) | 2,573.17 mi (4,141.11 km) |
| Hercules to Doraville (Georgia) | 2,128.41 mi (3,425.35 km) |
| Hercules to Dothan (Alabama) | 2,132.25 mi (3,431.53 km) |
| Hercules to Douglas (Arizona) | 854.87 mi (1,375.78 km) |
| Hercules to Douglas (Georgia) | 2,263.95 mi (3,643.47 km) |
| Hercules to Douglasville (Georgia) | 2,108.60 mi (3,393.46 km) |
| Hercules to Dover (Delaware) | 2,497.11 mi (4,018.71 km) |
