Marathon Oil Corporation to Participate in Global Hunter Securities 100 Energy Conference

Marathon Oil Corporation to Participate in Global Hunter Securities 100 Energy
Conference

HOUSTON, June 20, 2013 (GLOBE NEWSWIRE) -- Marathon Oil Corporation (NYSE:
MRO) announced today that Howard J. Thill, vice president, Investor Relations
and Public Affairs, will present at the Global Hunter Securities 100 Energy
Conference on Tuesday, June 25 at 8 a.m. CDT.

A live webcast of the remarks will be accessible via Marathon Oil's website at
http://www.marathonoil.com. This presentation and associated
question-and-answer session will include forward-looking information. A replay
of the presentation will be available and archived on Marathon Oil's website
until July 25, 2013.

Marathon Oil Corporation is an international exploration and production
company. Based in Houston, Texas, the Company had net proved reserves at the
end of 2012 of 2 billion barrels of oil equivalent in North America, Europe
and Africa. For more information, please visit our website at
http://www.marathonoil.com.

CONTACT: 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
 
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