Barrslievenaroy is a Hewitt of 702 m in Galway. In the database's Maumturk Mountains region it is the highest of seven register hills, above Maumtrasna and five others.
The key col lies 25.7 km away to the north-east, at 73 m. Its drop of 629 m is 90% of its height: the col linking it to higher ground is only 73 m above sea level. It overtops all four of its nearest neighbours; the tallest of them, Letterbreckaun, reaches 668 m. Of the register hills in Galway, only Benbaun and Bencorr stand higher. It shares its height of 702 m with Trollabhal, Beinn Fhada (Argyll and Bute) and Bowscale Fell. On the Hewitts height ladder it sits between Slievelamagan (702.2 m) and Bowscale Fell (702 m). Its other name is Mulnahogue.
