497 1 d495857d497.htm LETTER LETTER

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SIDLEY AUSTIN LLP

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      FOUNDED 1866   

May 30, 2013

VIA EDGAR

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

 

  Re:

LifePath® Index Retirement Portfolio, LifePath® Index 2020 Portfolio, LifePath® Index 2025 Portfolio, LifePath® Index 2030 Portfolio, LifePath® Index 2035 Portfolio, LifePath® Index 2040 Portfolio, LifePath® Index 2045 Portfolio, LifePath® Index 2050 Portfolio and LifePath® Index 2055 Portfolio, each a series of BlackRock Funds III

(File Nos. 33-54126, 811-07332)

Ladies and Gentlemen:

On behalf of BlackRock Funds III, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in the Prospectuses of LifePath® Index Retirement Portfolio, LifePath® Index 2020 Portfolio, LifePath® Index 2025 Portfolio, LifePath® Index 2030 Portfolio, LifePath® Index 2035 Portfolio, LifePath® Index 2040 Portfolio, LifePath® Index 2045 Portfolio, LifePath® Index 2050 Portfolio and LifePath® Index 2055 Portfolio (the “Funds”), dated April 30, 2013, as filed pursuant to Rule 497(e) under the Securities Act of 1933, on May 21, 2013 (the
“497 Filing”). The purpose of this filing is to submit the 497 Filing in XBRL for the Funds.

Any questions or comments on the 497 Filing should be directed to the undersigned at (212) 839-5583.

 

Very truly yours,

/s/ Ellen W. Harris

Ellen W. Harris

Enclosures

 

cc: Benjamin Archibald, Esq.

BlackRock Fund Advisors

Sidley Austin (NY) LLP is a Delaware limited liability partnership doing business as Sidley Austin LLP and practicing in affiliation with other Sidley Austin partnerships.