Rainy River Reports Wide, High-Grade Gold Intersection in 433 Zone

NR08-250 Intersects 18.0m Grading 7.61 g/t Au 450 m Below Surface

VANCOUVER, BRITISH COLUMBIA--(Marketwire - May 27, 2008) - Nelson W. Baker, President and CEO of Rainy River Resources Ltd. (TSX VENTURE:RR) is pleased to report results for six north trending drill holes recently completed targeting the four stratigraphically stacked, south dipping gold trends (from south to north Cap, 17/ODM, HS and 433) occurring in the southern part of Richardson Township approximately 80 km south of Kenora, Ontario. All six holes were designed to enhance the present gold resource of 1.4 M oz in the indicated category and 2.2 M oz in the inferred category (see February 26, 2008 press release). Of the six holes, two (NR08-214, NR08-249) were positioned to intersect the 17/ODM zone and also penetrate the underlying HS Zone which occurs between the 17/ODM Zone and 433 Zone. Two other, shallower holes (NR08-239, NR08-242) targeted the near-surface extension of the HS Zone. The fifth hole, NR08-250, was spotted near the western end of the 17/ODM Zone to test the 17/ODM, HS and 433 Gold Trends. Finally, the sixth hole, NR08-226, was positioned to intersect the Cap Zone approximately 150 m below surface and 350 m up dip from NR08-198 which intersected 4.0 m grading 25.67 g/t Au and 184.14 g/t Ag.

Hole NR08-250 successfully intersected wide gold intervals in all three gold trends (see Table I for details) with the 433 Zone recording an impressive 18.0 m true width interval grading 7.61 g/t Au (uncut) approximately 450 m below surface, one of the deepest intersections to date. The 433 Zone continues to return positive drill results with higher gold grades than previously encountered. This strong mineralization will have a direct impact on increasing Rainy River's global mineral resources.

In addition, the 17/ODM Zone continues to demonstrate continuity down dip and excellent potential to further expand the global gold resource. NR08-214, one of the deeper holes drilled to date, was successful in intersecting a high-grade interval of 4.5 m true width interval grading 7.43 g/t Au (uncut) approximately 650 m below surface. This intersection is approximately 100m down dip of the limits of the inferred gold resources, but has important implications for the underground resource potential in all four gold trends.

The details of the main intervals of gold mineralization for the six holes are highlighted in Table I below and the hole locations will be posted on the Company's website shortly at www.rainyriverresources.com.

Table I

              From      To  Width      Au    
Hole            (m)     (m)    (m)   (g/t)   Trend
NR08-214     757.0   761.5    4.5    7.43    17/ODM
             895.0   896.5    1.5   11.40    HS Trend
NR08-226     206.5   211.0    4.5    4.66    CAP Trend
NR08-239     212.0   222.5   10.5    3.18    HS Trend
 Including   215.0   218.0    3.0    7.68    HS Trend
NR08-242     235.0   236.5    1.5   15.04    HS Trend
             235.0   236.5    1.5   15.04    HS Trend
NR08-249     271.0   293.0   22.0    2.90    17/ODM (upper)
 Including   280.0   287.0    7.0    6.43    17/ODM
             347.0   356.0    4.5    9.89    17/ODM (lower)
             455.0   461.0    6.0    6.01    HS Trend
NR08-250     173.0   196.0   23.0    0.98    17/ODM (upper)
             215.0   235.5   20.5    1.61    17/ODM (lower)
             356.0   364.0    8.0    1.91    HS Trend
             564.5   582.5   18.0    7.61    433 Trend

Note: All intersected widths are estimated to be true width
intervals and all gold values listed above are uncut.

Presently, there are four rigs actively drilling on the Rainy River Project, three in Richardson Township and one in the Off Lake area approximately 23 km to the northeast.

Rainy River's President and CEO, Nelson W. Baker, comments that, "We continue to be impressed with this very large gold system and its exceptional exploration potential. With the higher grade gold results recorded in the Cap and now the 433 Zone, we are extremely confident that we can achieve our goal of significantly expanding our mineral resource by this fall."

Details on the current mineral resource are available in the April 2008 Technical Report which has been posted on SEDAR (www.sedar.com) and will be posted on the Company's website shortly www.rainyriverresources.com.

Rainy River's exploration program is being managed by Project Manager, Wally Rayner, P. Geo., a Qualified Person within the meaning of NI 43-101. C.J. Baker, M.Sc., the Company's regional exploration manager, is responsible for supervising the Off Lake drill program. Nelson W. Baker, P.Eng., is the Qualified Person for the project and the person responsible for the contents of this news release. The Company has implemented 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 a $37 million treasury, the Company is well funded to conduct an aggressive, year-round resource definition drilling program and regional drill testing of high-priority gold targets. The Company's property is extremely well located in western 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. 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.

Nelson W. Baker, President

This release includes certain statements that may be deemed to be "forward-looking statements". All statements in this release, other than statements of historical facts, that address events or developments that management of the Company expects, are forward-looking statements. Although management 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 or developments may differ materially from those in the forward-looking statements. The Company undertakes no obligation to update these forward-looking statements if management's beliefs, estimates or opinions, or other factors, should change. Factors that could cause actual results to differ materially from those in forward-looking statements, include market prices, exploration and development successes, continued availability of capital and financing, and general economic, market or business conditions. Please see the public filings of the Company at www.sedar.com for further information.

FOR FURTHER INFORMATION PLEASE CONTACT:

Rainy River Resources Ltd.
Brad Baker

(604) 731-6900 ext. 248

Email: bwb@rainyriverresources.com
Website: www.rainyriverresources.com