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Portland Meadows was an American horse racing venue in Portland, Oregon, owned by The Stronach Group since July 3, 2011 and previously owned by MI Developments Inc. (MID) 2001. Built by William P. Kyne, who also built Bay Meadows Racetrack in San Mateo, California, the facility opened on September 14, 1946. The track's closure was announced in March 2019, following the conclusion of the 2018-19 racing season, with the property slated for redevelopment. The last day for simulcast racing was December 7, 2019 and the poker room closed December 15, 2019. Demolition began in February 2020.The track has hosted both American Quarter Horse racing and Thoroughbred horse races. Over the years, Portland Meadows has been the site of numerous outdoor music concerts and other forms of entertainment. The national high school cross country running championship, the Nike Cross Nationals, have been held at Portland Meadows.
The grounds are in Hayden Meadows near the Columbia River and are 16 feet (4.9 m) above sea-level.