First race 1978 Previous names Rose City Grand Prix Most wins (team) Holbert Racing (4) | Last race 2006 | |
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The Portland Grand Prix was a sports car race held at the Portland International Raceway in Portland, Oregon from 1978 until 2006. It began as a round of the IMSA GT Championship, and became an American Le Mans Series race in 1999.
References
Portland Grand Prix Wikipedia(Text) CC BY-SA