| San Marino to Dixon (California) | 363.26 mi (584.61 km) |
| San Marino to Dixon (Illinois) | 1,639.02 mi (2,637.75 km) |
| San Marino to Dobbs Ferry (New York) | 2,442.59 mi (3,930.97 km) |
| San Marino to Doctor Phillips (Florida) | 2,185.76 mi (3,517.64 km) |
| San Marino to Dodge City (Kansas) | 1,041.13 mi (1,675.53 km) |
| San Marino to Dolton (Illinois) | 1,732.78 mi (2,788.64 km) |
| San Marino to Donna (Texas) | 1,315.95 mi (2,117.82 km) |
| San Marino to Dorado (Puerto Rico) | 3,349.94 mi (5,391.20 km) |
| San Marino to Doral (Florida) | 2,317.60 mi (3,729.82 km) |
| San Marino to Doraville (Georgia) | 1,929.20 mi (3,104.75 km) |
| San Marino to Dothan (Alabama) | 1,904.44 mi (3,064.89 km) |
| San Marino to Douglas (Arizona) | 533.34 mi (858.34 km) |
| San Marino to Douglas (Georgia) | 2,045.28 mi (3,291.55 km) |
| San Marino to Douglasville (Georgia) | 1,906.73 mi (3,068.59 km) |
| San Marino to Dover (Delaware) | 2,365.02 mi (3,806.12 km) |
