Sarrail Ridge via Rawson Lake

A marked End of Trail sign by Rawson Lake separates the maintained route from the unmaintained ridge path. Continue only when the ground is dry and you’re comfortable with steep, loose footing and a short hands-on step. Someone has tied a rope to a tree there, but it isn’t a maintained aid. The dirt can slide underfoot, especially on the descent; poles can help with balance. If the slope is damp or scrambling isn’t for you, turn around at the lake. You’ll still get a mountain-framed alpine lake and a substantial forest hike.

Park at Upper Lake Day Use Area, walk past the outhouses, and pick up the Upper Lake Trail at its large trail map. The first stretch is mostly level and wooded, with occasional openings toward the lake and Mount Indefatigable. A bridge crosses Sarrail Creek where it drops down a hillside in a small waterfall. At the signed junction beyond it, keep left for Rawson Lake.

After leaving Upper Lake Trail, the path climbs steadily through subalpine forest. Expect roots, rocks, fallen trees and muddy patches; split-log walkways cover some wet ground. A break in the trees gives a look down at clear Rawson Creek and its rocky bed before the lake opens under Mount Sarrail’s rock wall. Follow the shoreline around the south side if you’re continuing. There’s an outhouse at the lake, and a few larches near its far end.

Beyond the sign, follow the rocky shore to the far end of Rawson Lake and the base of the ridge. The path passes a steep rocky gully; the route goes to its right. Then comes the short rope-assisted rocky step, a few switchbacks, and a long, direct climb on loose dirt. Natural footholds help, but the slope stays steep. Higher up, the trees thin into an alpine meadow. Keep to the most trodden line rather than making new tracks across the slope.

The first ridge viewpoint opens between rocky walls over the Kananaskis Lakes. Continue a little higher along the ridge, past small larches toward the base of a pointed summit, for Upper and Lower Kananaskis Lakes on one side and Rawson Lake on the other. Mount Indefatigable’s south peak stands beyond the lakes. For a photo, keep some of the rough ridge in the foreground so the drop to the blue water has scale; the lakes and mountain walls are the signature view.

The ridge is best treated as a summer or early-fall outing, and only when the soil is dry; wet dirt makes the steep descent treacherous. Winter travel above Rawson Lake enters avalanche terrain. Mountain weather can change quickly. Alberta Parks advises carrying accessible bear spray in the park, and dogs must stay on leash.

The day-use lot is the right access for this full route; a Kananaskis Conservation Pass is required to park. Picnic tables and outhouses are at the trailhead. There’s no food vendor or potable-water stop documented along the walk, so bring what you need before setting out. Parking capacity isn’t posted; arriving early is sensible if you’re going at a busy time.