The R. N. Irwin Stakes is a South Australian Jockey Club Group 3 Weight for Age Thoroughbred horse race for three year olds and older, run over a distance of 1100 metres at Morphettville Racecourse, Adelaide, Australia in the autumn.
The R. N. Irwin Stakes is a prestigious South Australian Jockey Club Group 3 Weight for Age Thoroughbred horse race contested by three-year-olds and older horses, held over a distance of 1100 meters at Morphettville Racecourse in Adelaide, Australia during the autumn.