EXHIBIT 99.1

O'Reilly Automotive, Inc. Announces Dates for the Second Quarter 2011 Earnings Release and Conference Call

• Earnings Release Date – Wednesday, July 27, 2011, after 5:30 pm Central Time
• Conference Call Date – Thursday, July 28, 2011, at 10:00 am Central Time

SPRINGFIELD, Mo., July 1, 2011 (GLOBE NEWSWIRE) -- O'Reilly Automotive, Inc. (the "Company") (Nasdaq:ORLY), a leading retailer in the automotive aftermarket industry, announces the release date for its second quarter 2011 results as Wednesday, July 27, 2011, with a conference call to follow on Thursday, July 28, 2011.

The Company's second quarter 2011 results will be released after 5:30 p.m. central time on Wednesday, July 27, 2011, and can be viewed, at that time, on the Company's website at www.oreillyauto.com by clicking on "Investor Relations" and then "News Room".

Investors are invited to listen to the Company's conference call discussing the financial results for the second quarter of 2011, on Thursday, July 28, 2011, at 10:00 a.m. central time, via webcast on the Company's website at www.oreillyauto.com by clicking on "Investor Relations" and then "News Room". Interested analysts are invited to join the call. The dial-in number for the call is (706) 679-5789 and the conference call identification number is 73958598. A replay of the call will also be available on the Company's website following the conference call. 

O'Reilly Automotive, Inc. is one of the largest specialty retailers of automotive aftermarket parts, tools, supplies, equipment and accessories in the United States, serving both the do-it-yourself and professional service provider markets. Founded in 1957 by the O'Reilly family, the Company operated 3,613 stores in 39 states as of March 31, 2011.

The O'Reilly Automotive, Inc. logo is available at http://www.globenewswire.com/newsroom/prs/?pkgid=5430

CONTACT: Investor & Media Contacts
         Mark Merz
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