| Healdsburg to Dover (New Hampshire) | 2,688.97 mi (4,327.48 km) |
| Healdsburg to Dover (New Jersey) | 2,537.92 mi (4,084.38 km) |
| Healdsburg to Dover (Ohio) | 2,187.60 mi (3,520.61 km) |
| Healdsburg to Downers Grove (Illinois) | 1,839.12 mi (2,959.78 km) |
| Healdsburg to Downey (California) | 417.34 mi (671.64 km) |
| Healdsburg to Dranesville (Virginia) | 2,423.44 mi (3,900.15 km) |
| Healdsburg to Draper (Utah) | 599.89 mi (965.42 km) |
| Healdsburg to Drexel Heights (Arizona) | 801.05 mi (1,289.16 km) |
| Healdsburg to Drexel Hill (Pennsylvania) | 2,514.56 mi (4,046.80 km) |
| Healdsburg to Duarte (California) | 411.85 mi (662.82 km) |
| Healdsburg to Dublin (California) | 81.80 mi (131.64 km) |
| Healdsburg to Dublin (Georgia) | 2,265.06 mi (3,645.26 km) |
| Healdsburg to Dublin (Ohio) | 2,106.45 mi (3,390.01 km) |
| Healdsburg to Dubuque (Iowa) | 1,698.71 mi (2,733.81 km) |
| Healdsburg to Duluth (Georgia) | 2,162.81 mi (3,480.70 km) |
