Downhill from the car park the walk follows the Water of Gregg past Changue House to a point where the track forks sharp right and ascends to the forest. Continuing through the trees for 500yds the route bears left along a woodland trail. From this elevated route overlooking the Gregg Valley occasional views are glimpsed through the trees over the Changue Forest to the hills beyond. Once clear of the trees and on to the open hill an impressive vista opens up to the east.

Haggis Hill, Rowantree Hill and Pinbreck Hill form an impressive backdrop and beyond the Nick of the Balloch, an exciting hill pass on the road from Crosshill and Barr, which meets the Straiton road at the Rowantree Toll. Descending to a wooden footbridge the burn is crossed at an attractive waterfall and the way continues down along a narrow ridge to the valley below. Care should be taken when negotiating this ridge, as the path is steep and often slippery.

Traversing the burn you reach a delightful spot called the Fairy Knowe where it is worth pausing for a minute and looking back up the gully to where the burn rushes down a spectacular cleft in the hills. At this point you have the option, either to walk back down the Gregg Valley to the start or if you feel energetic you can turn right and continue along the Devil's Trail to make a longer yet rewarding excursion.