| San Marino to Sumter (South Carolina) | 2,147.33 mi (3,455.80 km) |
| San Marino to Sun City (Arizona) | 336.31 mi (541.24 km) |
| San Marino to Sun City Center (Florida) | 2,153.79 mi (3,466.19 km) |
| San Marino to Sun City West (Arizona) | 331.54 mi (533.56 km) |
| San Marino to Sun Lakes (Arizona) | 364.37 mi (586.40 km) |
| San Marino to Sun Prairie (Wisconsin) | 1,668.72 mi (2,685.54 km) |
| San Marino to Sun Valley (Nevada) | 390.16 mi (627.89 km) |
| San Marino to Sun Village (California) | 31.51 mi (50.72 km) |
| San Marino to Sunland Park (New Mexico) | 685.88 mi (1,103.81 km) |
| San Marino to Sunny Isles Beach (Florida) | 2,327.46 mi (3,745.68 km) |
| San Marino to Sunnyside (Washington) | 848.30 mi (1,365.21 km) |
| San Marino to Sunnyvale (California) | 314.41 mi (506.00 km) |
| San Marino to Sunrise (Florida) | 2,311.59 mi (3,720.15 km) |
| San Marino to Sunrise Manor (Nevada) | 223.92 mi (360.36 km) |
| San Marino to Sunset (Florida) | 2,320.81 mi (3,734.99 km) |
