| Healdsburg to Darby (Pennsylvania) | 2,517.23 mi (4,051.09 km) |
| Healdsburg to Dardenne Prairie (Missouri) | 1,723.95 mi (2,774.43 km) |
| Healdsburg to Darien (Illinois) | 1,841.21 mi (2,963.15 km) |
| Healdsburg to Davenport (Iowa) | 1,707.22 mi (2,747.50 km) |
| Healdsburg to Davidson (North Carolina) | 2,308.10 mi (3,714.52 km) |
| Healdsburg to Davie (Florida) | 2,605.47 mi (4,193.09 km) |
| Healdsburg to Davis (California) | 61.10 mi (98.33 km) |
| Healdsburg to Dayton (Nevada) | 182.70 mi (294.02 km) |
| Healdsburg to Dayton (Ohio) | 2,055.56 mi (3,308.11 km) |
| Healdsburg to Daytona Beach (Florida) | 2,459.15 mi (3,957.62 km) |
| Healdsburg to De Pere (Wisconsin) | 1,828.98 mi (2,943.47 km) |
| Healdsburg to De Witt (New York) | 2,433.04 mi (3,915.59 km) |
| Healdsburg to Dearborn (Michigan) | 2,080.84 mi (3,348.79 km) |
| Healdsburg to Dearborn Heights (Michigan) | 2,077.57 mi (3,343.52 km) |
| Healdsburg to DeBary (Florida) | 2,456.88 mi (3,953.97 km) |
