News Releases

Marathon Oil Corporation to Participate in Barclays Capital 2011 CEO Energy-Power Conference

Houston, TX, U.S.A., Aug 24, 2011 (Thomson Reuters ONE via COMTEX) -- HOUSTON, Aug. 24, 2011 - Marathon Oil Corporation (NYSE: MRO) announced today that Clarence P. Cazalot, Jr., Marathon's chairman, president and CEO, will present at the Barclays Capital 2011 CEO Energy-Power Conference on Wednesday, Sept. 7, at 10:25 a.m. EDT.

A live webcast of the remarks will be accessible via Marathon Oil's website at http://ir.marathonoil.com. This presentation may include forward-looking information. A replay of the presentation will be available and archived on Marathon Oil's website until Sept. 21, 2011.

Marathon Oil Corporation is an international energy company engaged in exploration and production, oil sands mining and integrated gas. At the end of 2010, Marathon Oil had net proved reserves of more than 1.6 billion barrels. Based in Houston, Texas, the Company has proved reserves in North America, the North Sea and Africa. For more information, please visit the Company's website at http://www.marathonoil.com.

###

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

This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients.

The owner of this announcement warrants that:

(i) the releases contained herein are protected by copyright and other applicable laws; and

(ii) they are solely responsible for the content, accuracy and originality of the

information contained therein.

Source: Marathon Oil Corporation via Thomson Reuters ONE

HUG#1540668