| Mountain Ash to Dover (New Jersey) | 3,339.69 mi (5,374.71 km) |
| Mountain Ash to Dover (Ohio) | 3,636.07 mi (5,851.69 km) |
| Mountain Ash to Downers Grove (Illinois) | 3,836.20 mi (6,173.76 km) |
| Mountain Ash to Downey (California) | 5,329.54 mi (8,577.07 km) |
| Mountain Ash to Dranesville (Virginia) | 3,537.56 mi (5,693.15 km) |
| Mountain Ash to Draper (Utah) | 4,760.39 mi (7,661.10 km) |
| Mountain Ash to Drexel Heights (Arizona) | 5,184.91 mi (8,344.31 km) |
| Mountain Ash to Drexel Hill (Pennsylvania) | 3,410.66 mi (5,488.92 km) |
| Mountain Ash to Duarte (California) | 5,310.99 mi (8,547.21 km) |
| Mountain Ash to Dublin (California) | 5,235.27 mi (8,425.35 km) |
| Mountain Ash to Dublin (Georgia) | 4,068.42 mi (6,547.48 km) |
| Mountain Ash to Dublin (Ohio) | 3,721.52 mi (5,989.20 km) |
| Mountain Ash to Dubuque (Iowa) | 3,906.48 mi (6,286.88 km) |
| Mountain Ash to Duluth (Georgia) | 4,047.83 mi (6,514.35 km) |
| Mountain Ash to Duluth (Minnesota) | 3,764.67 mi (6,058.66 km) |
