News Releases

HOUSTON, Jan. 27, 2011 - Marathon Oil Corporation (NYSE: MRO) announced today that Clarence P. Cazalot Jr., Marathon's president and CEO, will present at the 2011 Credit Suisse Energy Summit on Thursday, Feb. 10, 2011, at 2:55 p.m. EST.

A live audiocast of the remarks will be accessible via Marathon's website at http://www.marathon.com. This presentation and associated question-and-answer session may include forward-looking information. A replay of the presentation will be available and archived on Marathon's website until Feb. 24, 2011.

Marathon is an integrated international energy company engaged in exploration and production; oil sands mining; integrated gas; and refining, marketing and transportation operations. Marathon, which is based in Houston, has principal operations in the United States, Angola, Canada, Equatorial Guinea, Indonesia, Iraqi Kurdistan Region, Libya, Norway and the United Kingdom. Marathon is the fourth largest United States-based integrated oil company and the nation's fifth largest refiner. For more information, please visit the website at http://www.marathon.com.

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