Mimoun finished 47.8 seconds and more than 300 meters behind Zátopek.[24] Mimoun also ran in the 5,000 m event of the 1948 Summer Olympics but did not progress to the final round.[25] The following year he won the 5,000 m and 10,000 m French national championships titles and won his first major race at the International Cross Country Championships in Dublin, finishing ahead of compatriot Raphaël Pujazon in the individual event.