Marathon to Offer Only Ethanol Blended Gasoline at 16 Midwest Terminals Effective May 1, 2008

FINDLAY, Ohio, March 19 -- Marathon Oil Corporation today announced that the Company will convert to 100 percent ethanol blended fuel (E-10 gasohol) at 16 of its Midwest terminals beginning May 1, 2008. Unblended gasoline products will no longer be available at the following terminals; Indianapolis (86th Street) and Muncie, Ind.; Louisville (Algonquin), Ky.; Detroit (Refinery Rack), Romulus, Niles (South), Bay City, Flint, Lansing and Jackson, Mich.; Brecksville, Lima, Oregon, Lebanon and Cincinnati, Ohio; and Milwaukee(Granville), Wis.

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"Marathon is proud to announce that it will convert to 100 percent ethanol blended gasoline at these terminals," said Mary Ellen Peters, Marathon's senior vice president, Marketing. "Ethanol blended fuels help us meet the changing needs of our customers. It also supports our nation's renewable fuels goals, which were recently increased by the Energy Independence and Security Act of 2007 to nine billion gallons of renewable fuel in 2008 and 36.0 billion gallons by 2022."

In response to this legislation and increasing customer demand for ethanol blended gasoline, the Company expanded ethanol blending to more than 625 million gallons in 2007. In addition, to ensure the security and flexibility of ethanol supply, the Company also has an equity interest in ethanol facilities in Clymers, Ind., and Greenville, Ohio, totaling in excess of 220 million gallons of annual gross ethanol capacity.

About Marathon

Marathon is the fourth-largest U.S.-based fully integrated international energy company engaged in exploration and production; integrated gas; oil sands mining; and refining, marketing and transportation operations. The Company has exploration and production activities in the United States, the United Kingdom, Angola, Canada, Equatorial Guinea, Gabon, Indonesia, Ireland, Libya and Norway. Marathon is the fifth largest refiner in the U.S. with 1,016,000 bpd of crude processing capacity in its seven-refinery system. The Company's retail marketing system comprises approximately 6,000 locations in 18 states; nearly three-quarters are Marathon brand locations. Marathon serves the Midwest and Southeast as a petroleum products marketer with 87 light product and asphalt terminals and the Company owns, operates, leases or has an ownership interest in approximately 9,700 miles of pipeline.

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