| Gourock to Dover (New Jersey) | 3,209.83 mi (5,165.71 km) |
| Gourock to Dover (Ohio) | 3,486.45 mi (5,610.90 km) |
| Gourock to Downers Grove (Illinois) | 3,662.78 mi (5,894.67 km) |
| Gourock to Downey (California) | 5,100.01 mi (8,207.67 km) |
| Gourock to Dranesville (Virginia) | 3,407.53 mi (5,483.89 km) |
| Gourock to Draper (Utah) | 4,531.70 mi (7,293.07 km) |
| Gourock to Drexel Heights (Arizona) | 4,977.42 mi (8,010.38 km) |
| Gourock to Drexel Hill (Pennsylvania) | 3,282.90 mi (5,283.32 km) |
| Gourock to Duarte (California) | 5,081.45 mi (8,177.81 km) |
| Gourock to Dublin (California) | 4,990.26 mi (8,031.05 km) |
| Gourock to Dublin (Georgia) | 3,946.62 mi (6,351.47 km) |
| Gourock to Dublin (Ohio) | 3,568.69 mi (5,743.25 km) |
| Gourock to Dubuque (Iowa) | 3,723.26 mi (5,992.01 km) |
| Gourock to Duluth (Georgia) | 3,916.18 mi (6,302.48 km) |
| Gourock to Duluth (Minnesota) | 3,562.49 mi (5,733.28 km) |
