Since I've been out of racing really for five or six years, this was an eye opener. The decrease in the number of races is breathtaking. The track closures is also breathtaking:
California
Golden Gate Fields (Albany, CA) - Closed 2024Hollywood Park (Inglewood, CA) - Closed 2013Bay Meadows Racetrack (San Mateo, CA) - Closed 2008
Illinois
Arlington Park (Arlington Heights, IL) - Closed 2021Sportsman’s Park (Cicero, IL) - Closed 2003
Florida
Calder Race Course (Miami Gardens, FL) - Closed 2020 Hialeah Park (Hialeah, FL) - Closed 2016
Northeast Region
Suffolk Downs (Boston, MA) - Closed 2019 Rockingham Park (Salem, NH) - Closed 2016 Atlantic City Race Course (Mays Landing, NJ) - Closed 2015
Midwest & Southwest
Beulah Park (Grove City, OH) - Closed 2014 Yavapai Downs / Arizona Downs (Prescott Valley, AZ) - Closed 2022 Manor Downs (Manor, TX) - Closed 2010 Pinnacle Race Course (New Boston, MI) - Closed 2010 (Per Google)