News Releases

HOUSTON, April 19, 2011 - Marathon Oil Corporation (NYSE: MRO) announced today that the Company's first quarter 2011 financial results conference call will be webcast on the Marathon Oil Corporation website on Tuesday, May 3, at 2 p.m. EDT. The call will include forward-looking information.

Howard J. Thill, Marathon vice president, Investor Relations and Public Affairs, will host the call. Also participating from Marathon will be Clarence P. Cazalot Jr., president and CEO; Gary R. Heminger, executive vice president, Downstream; David E. Roberts Jr., executive vice president, Upstream; and Garry L. Peiffer, senior vice president, Finance and Commercial Services for Marathon's Refining, Marketing and Transportation operations.

Interested parties can listen to the conference call by visiting Marathon's website at http://www.Marathon.com and clicking on the 2011 First Quarter Financial Results link. Replays of the conference call will be available on the website through May 17, 2011. Financial information, including earnings releases and other investor-related material, also is available online.

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Media Relations Contacts
Lee Warren: 713-296-4103
John Porretto: 713-296-4102

Investor Relations Contacts
Howard Thill: 713-296-4140
Chris Phillips: 713-296-3213