2020 Race Dates Set for 31st season of Thunder on the Hill at Grandview
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The NAPA Auto Parts Thunder on the Hill Racing Series will return to the Grandview Speedway in 2020 for its thirty-first season. Another year of premier events will make-up the 2020 Thunder Series to include all the fan-favorite shows, plus the first-ever Trick or Treat Triple 20's for Modifieds joined by the Sportsman to highlight the October MODS at the MADHOUSE season finale. [...]