Marathon Drilling Continues Expansion of W Zone and Southern Resource

May 11, 2007 - Toronto, Ontario: Marathon PGM Corporation (MAR :TSX) ("Marathon" or the "Company") is pleased to announce the most recent results of fourteen drill holes.  Six of the holes intersected the W Zone with encouraging grades, including M-07-311, which hit 9.24 g/t PGM and gold over 4.0 m.

W Zone Drilling
The highest grade intersection was found in hole M-07-311, containing 9.24 g/t PGM and gold over 4.0 m.  This hole, along with holes M-07-307 and 310 (both previously announced in MAR release 2007-12, 19-Apr-07), 313, 314, 316 and 321, define a continuous layer of mineralization at depths as shallow as 50 m.  The layer defined by these holes starts on section 3750N and continues to section 3900N.  Additional drilling during June will determine continuity of mineralization to the north and west, as mineralization is open in these directions.

Hole M-07-312 intersected 8 m of 1.28 g/t PGM and gold and 0.35% copper, including 4 m of 2.25 g/t PGM and gold and 0.59% copper.  This hole was drilled 50 m south of the very rich mineralization discovered in hole M-07-306 (20 m at 23.4g/t PGM and gold, previously announced in MAR release 2007-12, 19-Apr-07) and positively establishes continuity of the mineral ized zone.  Additional drilling in the vicinity of hole 306 is currently underway because the high-grade mineralization is open down-dip to the W and to the north.

David Good, VP of Exploration noted, "The exploration model that has evolved from detailed analysis of drilling has been working extremely well.  Known areas of mineralization and especially the high-grade W zone have been expanding through drilling.  The model is serving our purposes well and is helping to refine our on-going exploration efforts."

Main Zone Drilling
Hole M-07-319, was drilled at the edge of the planned open pit in the Southern Resource area and initially encountered the W Zone and further downhole, intersected mineralization of the Southern Resources area.  Within the W zone of M-07-319, Marathon drilled an interval of 14 m at 1.13 g/t PGM and gold and 0.25% copper.  Further down the hole, the Company intersected an interval of 104 m grad ing 0.52 g/t PGM and gold and 0.26% copper.  To date, this is the thickest mineralized intercept in the immediate vicinity.  Mineralized intersections on the west side have been much thicker than expected, and further step-out drilling will establish the extent of mineralization.  The results of M-07-319 are very similar in width and grade to that of Hole M-07-309 (previously announced in MAR release 2007-12, 19-Apr-07), Marathon is encouraged with the potential to expand the resource through further drilling.

At present, both drills are conducting in-fill and step out drilling on the main Marathon property testing the down dip extensions of the southern end of the Main and high-grade W zones between Malachite zone and hole M07-319 to the north a distant of over 700 metres.

THIS PRESS RELEASE CONTAINS A TABLE AND A MAP.  CLICK HERE TO VIEW ORIGINAL PDF DOCUMENT.

All of the samples were sent to Accurassay, an accredited laboratory in Thunder Bay, Ont., to be assayed using fire assay and other standard techniques.

All exploration work is being performed under the guidance and supervision of Phillip C. Walford, President and Chief Executive Officer of the Company, a professional geologist and Qualified Person as defined by National Instrument 43-101. Mr. Walford has approved the contents of this press release.

About the Marathon PGM - Copper Project

The Company has a 100% interest in the Marathon PGM - Cu Project, located about 10km north of Marathon, Ontario. The Project is currently undergoing a definitive feasibility study and a 35,000 m drill campaign. As announced previously, the Company has completed a revised Preliminary Economic Assessment in compliance with the provisions of National Instrument 43-101, showing a potentially mineable measured resource of 39.2 million tonnes containing 1.6 million oz of PGM and gold and 285 million lbs of copper, and an indicated resource of 28.9 million tonnes containing 1.1 million oz of PGM and gold and 178 million lbs of copper. An additional low-grade resource was also identified in the report completed by P&E Mining Consultants Inc. and filed on Sedar on April 5, 2007.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION Except for statements of historical fact relating to the Company, certain information contai ned herein constitutes "forward-looking statements". Forward-looking statements are frequently characterized by words such as "plan," "expect," "project," "intend," "believe," "anticipate" and other similar words, or statements that certain events or conditions "may" or "will" occur. Forward-looking statements are based on the opinions and estimates of management at the date the statements are made and are subject to a variety of risks and uncertainties and other factors that could cause actual events or results to differ materially from those projected in the forward-looking statements. These risks and uncertainties include but are not limited to those identified and reported in Management's Discussion and Analysis for the year ended December 31, 2006. Circumstances or management's estimates or opinions could change, and management disclaims any obligation to revise or update forward-looking statements, whether for new information, future events or otherwise. The reader is cautioned not to place undue reliance on forward-looking statements.

The Toronto Stock Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of this release.

ON BEHALF OF MARATHON PGM:
"PHILLIP C. WALFORD"
PHILLIP C. WALFORD, P.GEO.
PRESIDENT, CHIEF EXECUTIVE OFFICER
GEN@MARATHONPGM.COM
TEL: +1.416.987.0711 

FOR MORE INFORMATION, PLEASE CONTACT:
DAVID LENG, P.GEO: DLENG@MARATHONPGM.COM
TEL:  +1.905.537.5377  
FAX: +1.416.861.1925 
WWW.MARATHONPGM.COM      

FOR MEDIA INQUIRIES, PLEASE CONTACT:
VANESSA NAPOLI, VNAPOLI@RENMARKFINANCIAL.COM
TEL: +1.514.939.3989