Unlike access to Stewart Creek which is longer than it ever was and requires a bike, access to Three Sisters Creek has been shortened.
From the Trans-Canada going west, get onto Three Sisters Parkway. Go straight at the first junction into Three Sisters Mountain village and follow Three Sisters Boulevard up a long straight hill to its end. The route starts on the gravel road beyond the locked gate, but you can’t park in front of the gate. Turn right at the top of the blvd. and park on Hubman Landing road. Hopefully, one day there will be a small parking area here to serve people on foot, because this is also the eastern terminus of the Highline trail and not everyone has a bike or lives in Canmore. Right now there is no sign to indicate the trail.
At the T-junction just beyond the gate, keep left (right leads to a construction zone). Almost straightaway the road dips away left, but you keep straight on a good trail that follows the wooden fence. After the fence turns right, the trail crosses a strip of woodland between Stewart Creek Golf Course on the left and the fence enclosing Three Sisters Golf Resort to the right. The trail then veers right, en route crossing a logging road. This marks the start of blue posts indicating the Highline trail. Nearing Three Sisters Creek, the trail turns sharp left and heads up valley. Cross another logging road.
At the next 4-way junction the Highline turns right and crosses a bridge over Three Sisters Creek to get onto the west side road—the original access to upper Three Sisters Creek. Rather than do this, at the 4-way junction go straight on an unsigned trail that follows the east bank of the creek alongside historic flumes. In about half a kilometre this trail crosses the creek on a second bridge amid discarded flumes and joins the west side road higher up. Turn left and follow the road to the dam.