Exhibit 24

MPC POWER OF ATTORNEY


      KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes
and appoints Molly R. Benson, Jodi E. Baker, Peter I. Kern and Shane T.
Pfleiderer (the "Attorneys"), and each of them, as the true and lawful attorney
or attorneys-in-fact , with full power of substitution and revocation, for the
undersigned and in the name, place and stead of the undersigned , in any and all
capacities, to execute, on behalf of the undersigned , (1) any and all notices
pursuant to Rule 144 under the Securities Act of 1933 with respect to sales of
shares of common stock, par value $0.01 per share, or other securities, of
Marathon Petroleum Corporation, including, without limitation, all notices of
proposed sale on Form 144, and (2) any and all statements or reports under
Section 16 of the Securities Exchange Act of 1934 with respect to the
beneficial ownership of common stock, par value $0.01 per share, or other
securities, of Marathon Petroleum Corporation, including, without limitation,
all initial statements of beneficial ownership on Form 3, all statements of
changes in beneficial ownership on Form 4, all annual statements of beneficial
ownership on Form 5 and all successor or similar forms, to be filed with the
Securities and Exchange Commission, to execute  any and all amendments or
supplements to any such notices, statements or reports, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting to said Attorney or
Attorneys-in-fact , and each of them, full power and authority to do so and
perform each and every act and thing requisite and necessary to be done in and
about the premises (including, without limitation, completing, executing,
delivering and filing a Form ID to apply for electronic filing codes), as fully
and to all intents and purposes as the  undersigned might or could do in person,
and hereby ratifying and confirming all that said Attorney or Attorneys-in-fact
, or any of them, or their substitute or substitutes, may lawfully do or cause
to be done by virtue hereof. The undersigned acknowledges that the foregoing
Attorneys-in-fact , and each of them, in serving in such capacity at the request
of the undersigned, are not assuming any of the responsibilities of the
undersigned to comply with Section 16 of the Securities Exchange Act of 1934 or
any other legal requirement. This Power of Attorney shall remain in effect until
revoked in writing by the undersigned.



____/s/ Tom Kaczynski____
  Tom Kaczynski

Date: 8/27/2015