Rainy River Intersects 128.5 g/t (4.13 oz/t) Gold Over 5.5 Metres in 433 Zone

TORONTO, ONTARIO--(Marketwire - June 9, 2010) - Rainy River Resources Ltd. (TSX VENTURE:RR) (the "Company" or "Rainy") announces high-grade gold intercepts from the 433 zone at the Rainy River Gold Project in Northwestern Ontario.

Highlights

• 433 Zone high-grade plunge continues - 128.5 g/t (4.13 oz/t) gold over 5.5 metres
• 76.0 g/t (2.44 oz/t) gold over 1.5 metres discovered 100 metres east of main 433 zone
• New 433 FW zone returns 17.7 g/t (0.57 oz/t) over 1.5 metres

433 Drill Hole Extension Program

Rainy River continues to extend previously drilled holes into the deep areas of the 433 zone with encouraging results. Drill hole NR06-42E intersected 128.5 g/t (4.13 oz/t) gold over 5.5 metres, including 220.3 g/t (7.08 oz/t) gold over 3.2 metres, including 452.8 g/t (14.5 oz/t) gold over 1.5 metres approximately 500 metres below surface. This new intersection lies approximately 50 metres up-dip of an intersection of 7.6 g/t (0.24 oz/t) gold over 18.0 metres in NR08-250, including 79.5 g/t (2.56 oz/t) gold over 1.5 metres (see news release dated May 27, 2008) and further supports the presence of a high-grade corridor within the 433 zone.

Additionally, drill hole NR08-244E intersected 76.0 g/t (2.44 oz/t) gold over 1.5 metres approximately 100 metres down plunge from an intersection of 9.8 g/t (0.31 oz/t) gold over 1.5 metres in hole NR06-77E. These two intersections are significant in that they lie 100 metres east of the main 433 Zone in a previously untested area and represent a possible eastward strike extension of the zone.

Further drill results at a depth of approximately 600 metres include NR09-355E intersecting 17.7 g/t (0.57 oz/t) gold over 1.5 metres in the 433 FW (FootWall) Zone and NR06-65E intersecting 17.0 g/t (0.55 oz/t) gold over 1.5 metres in the main 433 Zone. In addition, NR10-486 demonstrated that significant upside exists in the shallow regions of the 433 Zone by intersecting 1.77 g/t (0.05 oz/t) gold over 40.5 metres, including an interval of 5.22 g/t (0.17 oz/t) gold over 7.5 metres.

Detailed assay results for all holes are located in Table 1, below. To view Drillhole Location Plan Map and Longitudinal Section please click on the following link: http://media3.marketwire.com/docs/RR0609.pdf

Commentary

"We have had great success finding and improving the continuity of high-grade gold throughout both the 433 and ODM zones," commented Garett Macdonald, Vice President of Operations. "The exploration program continues to demonstrate the potential for underground mining and we have commissioned an alternative scoping scenario to study an all underground mining operation versus a pit & underground operation. We will be aggressively pursuing a drilling and engineering program to look at both options, including the development of a decline from surface to access these high grade areas. In addition to strengthening the continuity of the deposit the drill program will also be designed to increase resources."

Western Area and RC Target Drilling Update

As part of the step-out exploration program, seven widely spaced drill holes were completed in the western area of the deposit and near the South Zone western extension. All holes intersected gold values over narrow widths as detailed in Table 1.

Qualified persons

Rainy River's exploration program in Richardson Township is being supervised by Stuart Averill, P.Geo. Vice-President Exploration and is being managed by Wally Rayner, P.Geo., Project Manager, both Qualified Persons as defined by National Instrument 43-101. Garett Macdonald, P.Eng., is the person responsible for the content of this news release. The Company continues to implement a rigorous QA/QC program to ensure best practices in sampling and analysis of drill core. The procedures of the QA/QC program are detailed on Rainy River's website at www.rainyriverresources.com.

About Rainy River Resources Ltd.

Rainy River Resources is a Canadian precious metals exploration company whose key asset is the Rainy River Gold Project. With over CAN$60 million in its treasury, the Company is well funded to conduct a dual-focused drilling program consisting of: 1) definition diamond drilling of the main gold resources in preparation for scoping and pre-feasibility studies, and 2) selective diamond drill testing of high-priority gold targets defined primarily by RC drilling within the large gold system centered in Richardson Township. The Company's property is extremely well located in the southwestern corner of northern Ontario near the U.S. border. It is accessed by a network of roads and is close 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. 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.

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.

Table 1. Summary of Significant Results

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