News Releases

Marathon Oil Corporation to Participate in UBS Global Oil and Gas Conference

HOUSTON, May 19, 2011 - Marathon Oil Corporation (NYSE: MRO) announced today that Howard J. Thill, Marathon vice president, Investor Relations and Public Affairs, will present at the UBS Global Oil and Gas Conference on Tuesday, May 24, at 12:55 p.m. EDT.

A live webcast of the remarks will be accessible via Marathon's website at http://www.marathon.com. This presentation may include forward-looking information. A replay of the presentation will be available and archived on Marathon's website until June 7, 2011.

For more information about Marathon Oil Corporation, please visit the Company's website at http://www.marathon.com.

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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