NN2373555353 Before leaving the road take time to pinpoint the Pink Rib. North-northeast from you is a deep gully cutting diagonally across the south face of Beinn a' Chrulaiste. From here scan right to the first clean, continuous line of rock, a prominent pink dyke immediately to the right of a small stream. This is it. Cross the road, climb a fence, and head over soggy ground to the West Highland Way. Cross this, climb the grassy west bank of the bouldery burn that emanates from the deep gully, and then follow the smaller stream up steep pathless heather to the lowest rocks of the Pink Rib.

NN2396655977 Pick your own line up the first scattered outcrops, moving rightwards on heather to avoid anything too steep. Scrappy rock and heather then lead up and left to the base of the continuous rib, right beside the little burn. Now simply follow your nose up the rib overlooking the burn on delightfully rough, slabby rock. It's grade 1 by the easiest line, and never feels too exposed. Above a prominent waterfall the rib begins to fade into the hillside and there are a few loose rocks to look out for. Sadly it's all over too soon.

NN2410256320 Once on the relatively featureless grassy ground of Beinn a' Chrulaiste's upper slopes bear northeast for the steady path-free ascent onto the broad summit. It's a bit of a plod, but the views back to The Buachaille are outstanding. The summit is marked with a trig point in a little circle of stones, and a nearby cairn.

NN2462056670 To complete a circuit of the mountain first follow a vague path southeast to pick up the mountain's eastern spur. This makes a scenic descent route, with the expanse of Rannoch Moor stretched out below. The ground soon steepens, becoming increasingly rough and rocky, and the trail fades in and out of view. As height is lost it's tempting to make a beeline for the Kings House Hotel far below, but the intervening ground is unpleasantly steep. Instead bear left, roughly east, into boggy Coire a' Bhalach. A very soggy path then follows the cascading Allt a' Bhalaich south to the roadside near the hotel.

NN2600354912 Follow the minor road west, then take a short stretch of the West Highland Way (signposted) along the base of Beinn a' Chrulaiste until you're back below the Pink Rib.