| San Marino to Des Plaines (Illinois) | 1,721.21 mi (2,770.03 km) |
| San Marino to Desert Hot Springs (California) | 90.65 mi (145.88 km) |
| San Marino to DeSoto (Texas) | 1,228.59 mi (1,977.22 km) |
| San Marino to Destin (Florida) | 1,859.23 mi (2,992.14 km) |
| San Marino to Destrehan (Louisiana) | 1,644.96 mi (2,647.31 km) |
| San Marino to Detroit (Michigan) | 1,967.88 mi (3,166.99 km) |
| San Marino to Diamond Bar (California) | 19.02 mi (30.61 km) |
| San Marino to Diamond Springs (California) | 350.18 mi (563.56 km) |
| San Marino to Dickinson (North Dakota) | 1,189.95 mi (1,915.04 km) |
| San Marino to Dickinson (Texas) | 1,388.56 mi (2,234.67 km) |
| San Marino to Dickson (Tennessee) | 1,736.18 mi (2,794.11 km) |
| San Marino to Difficult Run (Virginia) | 2,268.81 mi (3,651.30 km) |
| San Marino to Dinuba (California) | 182.41 mi (293.56 km) |
| San Marino to Discovery Bay (California) | 325.98 mi (524.62 km) |
| San Marino to Dix Hills (New York) | 2,471.25 mi (3,977.09 km) |
