Sprague Triple Crown Series Three Thursdays in July: 9th, 16th & 23rd. Race Time @ 7:00 P.M. Day of Race Registration: $5.00. At the Sprague High Track in Salem, Oregon. The Sprague Grand Slam is a series of One Mile and 3000 Meter races. They are held on three Thursdays in July - starting at 7:00 P.M. - at the Sprague High School track. Athletes may enter either or both races for one entry fee. Each athlete will receive a certificate with their time and placing in their race. Any athlete who wins their age group in an event, in all three meets, will receive a custom made Grand Slam Champion shirt. The races will be run in this order. Heats may be run depending on the number of participants. Adult male Mile Adult female Mile Combined kids Mile Combined all ages 3000 New this year: a free trail walk using the trails of Skyline Park in and around the Sprague High School campus. Approximate distance is 2 miles.