Okay soo...I'm assuming you see Les Prince Hall....Start walking on the road towards the rugby fields from the entrance of Les Prince. The Rugby Fields are the grassy ones surrounded from three sides by the forest.
As you are walking towards the fields there is a Tall Wooden Obstacle Course Type Tower. Right behind it is where the trail starts. In other words the trail starts to the left of the Rugby Fields and is hidden inside the forest on the Google Map. It curves all the way to Churchill Park(Which is also marked on the map).
The Incline is right before you reach churchill park. Well worth the exploration, the trail looks absolutely stunning in Fall because of the Orange/Red/Yellow Leaves that cover all of it.
Edit: Or This spot
43.268446,-79.9140 marks the entrance