| Gourock to Dixon (Illinois) | 3,712.57 mi (5,974.80 km) |
| Gourock to Dobbs Ferry (New York) | 3,177.66 mi (5,113.96 km) |
| Gourock to Doctor Phillips (Florida) | 4,108.20 mi (6,611.50 km) |
| Gourock to Dodge City (Kansas) | 4,293.60 mi (6,909.89 km) |
| Gourock to Dolton (Illinois) | 3,655.98 mi (5,883.74 km) |
| Gourock to Donna (Texas) | 4,858.74 mi (7,819.39 km) |
| Gourock to Dorado (Puerto Rico) | 4,071.15 mi (6,551.89 km) |
| Gourock to Doral (Florida) | 4,206.22 mi (6,769.26 km) |
| Gourock to Doraville (Georgia) | 3,925.88 mi (6,318.09 km) |
| Gourock to Dothan (Alabama) | 4,109.31 mi (6,613.30 km) |
| Gourock to Douglas (Arizona) | 4,971.80 mi (8,001.34 km) |
| Gourock to Douglas (Georgia) | 3,997.90 mi (6,434.00 km) |
| Gourock to Douglasville (Georgia) | 3,951.05 mi (6,358.60 km) |
| Gourock to Dover (Delaware) | 3,329.35 mi (5,358.08 km) |
| Gourock to Dover (New Hampshire) | 2,963.31 mi (4,768.99 km) |
