Rainy River Further Increases Land Position

TORONTO, ONTARIO -- (Marketwire) -- 06/25/10 -- Rainy River Resources Ltd. (TSX VENTURE: RR) (the 'Company' or 'Rainy') announces that it has added additional ground to its sizable land package in the Rainy River district of northwestern Ontario.

The Company has entered into an option agreement to earn a 100% interest in one patented claim totalling approximately 160 acres. To exercise the option, the Company must pay the vendor total cash payments of $100,000 and issue a total of 50,000 shares of the Company over a five year period. This option agreement is subject to acceptance by the TSX Venture Exchange.

About Rainy River Resources Ltd.

Rainy River Resources Ltd. is a Canadian precious metals exploration company whose key asset is the Rainy River gold project in Richardson Township in Northwestern Ontario. The Company's property is extremely well located, with easy access by a network of roads and in close proximity to hydro-electric infrastructure. The Rainy River district has a skilled labour force and is one of the lowest-cost areas for mineral exploration and development in Canada. The province of Ontario has low political risk and, according to the annual Fraser Institute global survey of the mining industry, has consistently ranked as one of the top jurisdictions embracing mineral development.

During the past several years the Company has been conducting a dual-focused exploration program on its Rainy River project, consisting of definition diamond drilling of the main gold resource with accompanying scoping-style studies, and selective diamond drill testing of high-priority gold targets defined primarily by RC drilling within the large gold system centered in the so-called 17/ODM/433 zones. To date its efforts have identified a total inferred and indicated resource of approximately 5 million ounces of gold. With a large land position, approximately CDN $63 million in the treasury, and numerous ore grade intercepts on drill targets outside the main resource of the 17/ODM/433 zones, Rainy River is well positioned to continue with its drill program and to continue planning for future development of a mine.

RAINY RIVER RESOURCES LTD.

Raymond W. Threlkeld, President & CEO

This release includes certain statements that may be deemed to be 'forward-looking statements'. All statements in this release, other than statements of historical fact, that address events or developments that the Company expects to occur, are forward looking statements. Forward looking statements are statements that are not historical facts and are generally, but not always, identified by the words 'expects', 'plans', 'anticipates', 'believes', 'intends', 'estimates', 'projects', 'potential' and similar expressions, or that events or conditions 'will', 'would', 'may', 'could' or 'should' occur. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from those in forward looking statements. Factors that could cause the actual results to differ materially from those in forward-looking statements include gold prices, results of exploration and development activities, regulatory changes, defects in title, availability of materials and equipment, timeliness of government approvals, continued availability of capital and financing and general economic, market or business conditions. The Company cautions that the foregoing list of important factors is not exhaustive. Investors and others who base themselves on the Company's forward-looking statements should carefully consider the above factors as well as the uncertainties they represent and the risk they entail. The Company believes that the expectations reflected in those forward-looking statements are reasonable, but no assurance can be given that these expectations will prove to be correct. Please see the public filings of the Company at www.sedar.com for further information.

The TSX Venture Exchange has not reviewed and does not accept the responsibility for the adequacy or accuracy of this news release.

Contacts:

Rainy River Resources Ltd.

Liz Caridi

Director of Investor Relations and Corporate Governance

(604) 639-4497
lcaridi@rainyriverresources.com
www.rainyriverresources.com