Located about 15 minutes North of Squamish BC, the Brohm Lake Interpretive Forest offers a couple of off-leash trail options. Avy and I have done the loop around the lake and found it very enjoyable. The trail difficulty is moderate in places but the majority of it is relatively easy. The scenery is beautiful and varied as you loop around the lake. Allow approximately 5 hours to do a full loop.
Check out the BC Ministry of Forests trail map for an overview of the area.