Thia trail runs along the Etobicoke Creek just west of Sherway Gardens and the Trillium Health Center (Hospital). It starts at the northern end of the paved Etobicoke Creek Trail through Marie Curtis Park. There are some cement skinnies under the QEW with lots of rocks. Once you're past this area, it's pretty easy from there on mostly going through open fields with lots of over-growth.
At the north end, you'll encounter an old unused road with a stone bridge rumored to be the second oldest of its kind in North America. You can then continue north on the next trail section which is much more difficult. Or you can bypass it by going east on the old road up to the West Mall and go north on the West Mall to the Dundas overpass. From there you'll re-connect with paved trails at Neilson Park.