AUBURN, Wash. -- The $250,000 Longacres Mile, Emerald Downs' richest race, is just seven weeks away, long enough to further separate the contenders from the pretenders, but probably not long enough for a locally based mystery horse to emerge. If an Emerald-based runner is to win this year's Mile, he'll likely come from a small group that includes Noosa Beach, Assessment, Winning Machine, Gallon, Posse Power, and Rooster City.