| Hercules to Duluth (Minnesota) | 1,639.49 mi (2,638.50 km) |
| Hercules to Dumas (Texas) | 1,128.17 mi (1,815.62 km) |
| Hercules to Dumont (New Jersey) | 2,549.30 mi (4,102.70 km) |
| Hercules to Duncan (Oklahoma) | 1,372.43 mi (2,208.71 km) |
| Hercules to Duncanville (Texas) | 1,470.80 mi (2,367.02 km) |
| Hercules to Dundalk (Maryland) | 2,444.62 mi (3,934.23 km) |
| Hercules to Dunedin (Florida) | 2,368.60 mi (3,811.90 km) |
| Hercules to Dunkirk (New York) | 2,260.43 mi (3,637.81 km) |
| Hercules to Dunmore (Pennsylvania) | 2,460.68 mi (3,960.08 km) |
| Hercules to Dunwoody (Georgia) | 2,125.42 mi (3,420.53 km) |
| Hercules to Durango (Colorado) | 787.59 mi (1,267.50 km) |
| Hercules to Durant (Oklahoma) | 1,467.09 mi (2,361.05 km) |
| Hercules to Durham (North Carolina) | 2,374.93 mi (3,822.09 km) |
| Hercules to Dyer (Indiana) | 1,848.91 mi (2,975.53 km) |
| Hercules to Dyersburg (Tennessee) | 1,809.26 mi (2,911.72 km) |
