The easiest way summit Letterbreckaun is a 6-kilometre 2-3-hour route via the pass of Maam Turk; however, because of its positioning on the high rocky central spine of the central Maumturk range, it is also summited in a longer 14-kilometre 5–6 hour loop-route starting at the col of Maumahoge in the south, climbing Knocknahillion and then along a winding 2-kilometre rocky ridge to the top of Letterbreckaun, before descending via the "v-shaped" col of Maam Turk.
