Cairnsmore of Fleet is a Graham of 711.1 m in Dumfries and Galloway. Its closest neighbour in this register, Millfore, is 8.7 km away.
Its drop of 522 m is 73% of its height: the col linking it to higher ground is only 189 m above sea level. All four of its nearest neighbours lie to the north, so it stands at the southern edge of its group. On the Grahams height ladder it sits between Beinn Tharsuinn (Highland, NH412829) (711.2 m) and Druim Fada (Highland, NG894083) (710.7 m).