| Westmont to Des Plaines (Illinois) | 1,736.57 mi (2,794.74 km) |
| Westmont to Desert Hot Springs (California) | 100.82 mi (162.25 km) |
| Westmont to DeSoto (Texas) | 1,239.68 mi (1,995.07 km) |
| Westmont to Destin (Florida) | 1,870.26 mi (3,009.90 km) |
| Westmont to Destrehan (Louisiana) | 1,655.30 mi (2,663.95 km) |
| Westmont to Detroit (Michigan) | 1,983.21 mi (3,191.67 km) |
| Westmont to Diamond Bar (California) | 28.11 mi (45.24 km) |
| Westmont to Diamond Springs (California) | 357.28 mi (574.98 km) |
| Westmont to Dickinson (North Dakota) | 1,206.43 mi (1,941.57 km) |
| Westmont to Dickinson (Texas) | 1,397.81 mi (2,249.56 km) |
| Westmont to Dickson (Tennessee) | 1,749.59 mi (2,815.70 km) |
| Westmont to Difficult Run (Virginia) | 2,283.31 mi (3,674.63 km) |
| Westmont to Dinuba (California) | 190.24 mi (306.16 km) |
| Westmont to Discovery Bay (California) | 330.20 mi (531.41 km) |
| Westmont to Dix Hills (New York) | 2,486.23 mi (4,001.21 km) |
