A Small Slice of History!
Harbor Park was a five furlong dirt oval that was located at Grays Harbor County Fairgrounds in Elma, which is about 90 miles from Seattle. It had an open air grandstand that sat 3,750. The facility had stables for 450 horses.
Racing was held from 1982 to 1997 and was part of the Blue Mountain Circuit, that included Sun Downs, Dayton, Waitsburg and Walla Walla. Racing was usually held in late July sometimes running into early August, the meet would vary from three to five days, sometimes run in a row or spanning two weekends. Racing featured thoroughbreds, quarter horses and mixed breeds. Besides horses from the fair circuit, runners would come Longacres, Emerald Downs and tracks in Oregon and Idaho.
If you visit Harbor Park today you won't find horses, but you will find horsepower. The facility has been turned into a auto racing venue. The car racing oval is inside the horse racing track, which has all but disappeared over the years. I myself never made it to Harbor Park, but I doubt many people did, a pretty obscure stop on the horse racing historical map.
I guess you could look at Harbor Park, in one of two ways. One was that it was a track that existed for fifteen years of racing, or it was a place that over it's existence ran about 60 days of racing, which is roughly three months of the Aqueduct yearly schedule. Your call!