Slieve Carr is a Hewitt of 721 m in Mayo. The key col lies 15.5 km away to the east, at 73 m.
Its drop of 648 m is 90% of its height: the col linking it to higher ground is only 73 m above sea level. It shares its height of 721 m with Ben Stack, Ben Cleuch and Rhinog Fawr. On the Hewitts height ladder it sits between Ullscarf (723 m) and Rhinog Fawr (721 m). The summit is marked by a trig point.