racegoer

noun

1. One who attends horse races or dog races.

   “On December 9, No. 4056, Princess Margaret, worked a racegoers' excursion from Stapleton Road, Bristol, to Newbury Racecourse, via Devizes.”

   “Many of the racegoers — the ones from New York, at least — said they knew about the governor’s troubles, but they largely chalked them up to politics as usual.”

   “The line had been forced into spending £500,000 to repair a landslip during the winter at Gotherington, and the railway was only just able to open in time in order to transport racegoers to the annual Cheltenham Festival in March.”