| San Marino to Delaware (Ohio) | 1,961.26 mi (3,156.35 km) |
| San Marino to Delhi (California) | 272.96 mi (439.29 km) |
| San Marino to Delray Beach (Florida) | 2,315.51 mi (3,726.46 km) |
| San Marino to Deltona (Florida) | 2,191.17 mi (3,526.35 km) |
| San Marino to Deming (New Mexico) | 612.37 mi (985.52 km) |
| San Marino to Denison (Texas) | 1,232.15 mi (1,982.96 km) |
| San Marino to Dent (Ohio) | 1,876.03 mi (3,019.17 km) |
| San Marino to Denton (Texas) | 1,205.42 mi (1,939.93 km) |
| San Marino to Dentsville (South Carolina) | 2,113.96 mi (3,402.09 km) |
| San Marino to Denver (Colorado) | 827.14 mi (1,331.16 km) |
| San Marino to Depew (New York) | 2,193.34 mi (3,529.83 km) |
| San Marino to Derby (Connecticut) | 2,482.13 mi (3,994.61 km) |
| San Marino to Derby (Kansas) | 1,189.52 mi (1,914.34 km) |
| San Marino to Des Moines (Iowa) | 1,426.43 mi (2,295.62 km) |
| San Marino to Des Moines (Washington) | 942.44 mi (1,516.70 km) |
