Newmarket racecard & betting odds from William Hill. Free Racing Post spotlight & verdict on all horse racing. Newmarket Racecourse is the Home of Racing with 39 fantastic race days in Top Quality Racing, Fantastic Themed Days & Live Music Events. What's On · Newmarket Nights · The Moët & Chandon July · Plan Your Raceday. Newmarket Racecourse, which has a capacity of 45,, is a British Thoroughbred horse racing venue in the town of Newmarket, Suffolk. Newmarket is often Owned by : Jockey Club Racecourses.