| Howard to Dixon (California) | 1,782.21 mi (2,868.19 km) |
| Howard to Dixon (Illinois) | 200.89 mi (323.31 km) |
| Howard to Dobbs Ferry (New York) | 760.69 mi (1,224.21 km) |
| Howard to Doctor Phillips (Florida) | 1,171.73 mi (1,885.72 km) |
| Howard to Dodge City (Kansas) | 777.18 mi (1,250.75 km) |
| Howard to Dolton (Illinois) | 204.79 mi (329.58 km) |
| Howard to Donna (Texas) | 1,388.68 mi (2,234.86 km) |
| Howard to Dorado (Puerto Rico) | 2,199.51 mi (3,539.77 km) |
| Howard to Doral (Florida) | 1,365.90 mi (2,198.20 km) |
| Howard to Doraville (Georgia) | 764.36 mi (1,230.12 km) |
| Howard to Dothan (Alabama) | 932.89 mi (1,501.34 km) |
| Howard to Douglas (Arizona) | 1,474.66 mi (2,373.24 km) |
| Howard to Douglas (Georgia) | 946.02 mi (1,522.48 km) |
| Howard to Douglasville (Georgia) | 769.91 mi (1,239.05 km) |
| Howard to Dover (Delaware) | 745.91 mi (1,200.42 km) |
