787 Seventh Avenue
	New York, NY 10019-6099 Tel: 212 728 8000 Fax: 212 728 8111

December 4, 2017

VIA EDGAR

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

Re: BlackRock LifePath^® Smart Beta 2060 Fund, a series of BlackRock Funds II

(File No. 333-142592 and File No. 811-22061)

Ladies and Gentlemen:

On behalf of BlackRock Funds II and pursuant to Rule 497(e) under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in a supplement, dated November 9, 2017, to the Prospectus, dated May 31, 2017, for BlackRock LifePath^® Smart Beta 2060 Fund, (the “Fund”). The purpose of the filing is to submit the 497(e) filing dated November 9, 2017 in XBRL for the Fund.

Any questions or comments on this filing should be directed to the undersigned at 212-728-8172.

Very truly yours,

/s/ Dean A. Caruvana

Dean A. Caruvana

Enclosures

cc: Ben Archibald, Esq., BlackRock Advisors, LLC

Elliot J. Gluck, Esq., Willkie Farr & Gallagher LLP