Thursday, 07. July 2011 14:25

FINDLAY, Ohio, July 7, 2011-Marathon Petroleum Corporation (NYSE:MPC) today
announced that the company's stock was added to the Standard & Poor's 500 Index
after the market closed on Thursday, June 30, 2011.

Marathon Petroleum was added to the S&P 500 GICS (Global Industry Classification
Standard) Oil & Gas Refining & Marketing Sub-Industry index.

Current S&P 500 constituent Marathon Oil Corporation (NYSE:MRO) spun off
Marathon Petroleum to its shareholders in a transaction that was completed after
the market close on June 30.

The S&P 500 Index consists of 500 stocks chosen for market size, liquidity and
industry group representation. It is a market-value weighted index (stock price
times number of shares outstanding), with each stock's weight in the index
proportionate to its market value. According to Standard & Poor's, the "500" is
one of the most widely used benchmarks of U.S. equity performance and is held
broadly by U.S. and international index funds.

About Marathon Petroleum
Marathon Petroleum Corporation (MPC) is the nation's fifth largest refiner with
a crude capacity in excess of 1.1 million barrels per day in its six-refinery
system.  Marathon brand gasoline is sold through 5,100 independently owned
locations across 18 states.  In addition, Speedway LLC, a MPC subsidiary
company, owns and operates the nation's fourth largest convenience store chain
with approximately 1,350 locations in seven states.  MPC also owns, operates,
leases or has ownership interest in approximately 9,600 miles of pipeline.
MPC's fully integrated system provides operational flexibility to move crude
oil, feedstocks and petroleum-related products efficiently through the company's
distribution network in the Midwest, Southeast and Gulf Coast regions.  For
additional information about the company, please visit our website at

# # #
Media Contacts:
Angelia Graves 1-419-421-2703
Shane Pochard 1-419-421-4327

Investor Relations Contacts:
Pam Beall 1-419-429-5640
Beth Hunter 1-419-421-2559

MPC added to S&P 500:

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(i) the releases contained herein are protected by copyright and
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originality of the information contained therein.

Source: Marathon Petroleum Company via Thomson Reuters ONE

Related Links: Marathon Petroleum Corp.
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