Stiffelio is a 8 year old horse and has raced from 2017 to 2020. He was sired by Stay Gold out of the Mtoto mare Serious Attitude. He was trained by Hidetaka Otonashi and has raced for Shadai Race Horse Co. Ltd., and was bred in [Add Data] by [Add Data]. Stiffelio has raced and won at Nakayama-JPN, Kyoto-JPN, Hanshin-JPN, Tokyo-JPN. His has a stakes win at the 2019 All Comers Stakes (G2).