| Howard to Darby (Pennsylvania) | 729.59 mi (1,174.17 km) |
| Howard to Dardenne Prairie (Missouri) | 424.10 mi (682.52 km) |
| Howard to Darien (Illinois) | 195.30 mi (314.31 km) |
| Howard to Davenport (Iowa) | 243.79 mi (392.34 km) |
| Howard to Davidson (North Carolina) | 735.50 mi (1,183.67 km) |
| Howard to Davie (Florida) | 1,349.68 mi (2,172.10 km) |
| Howard to Davis (California) | 1,774.78 mi (2,856.23 km) |
| Howard to Dayton (Nevada) | 1,648.32 mi (2,652.71 km) |
| Howard to Dayton (Ohio) | 386.22 mi (621.55 km) |
| Howard to Daytona Beach (Florida) | 1,129.08 mi (1,817.08 km) |
| Howard to De Pere (Wisconsin) | 9.66 mi (15.55 km) |
| Howard to De Witt (New York) | 607.76 mi (978.10 km) |
| Howard to Dearborn (Michigan) | 290.20 mi (467.03 km) |
| Howard to Dearborn Heights (Michigan) | 287.36 mi (462.46 km) |
| Howard to DeBary (Florida) | 1,145.92 mi (1,844.18 km) |
