🚲Mountain Biking In The Don Valley - The Flats 

The trail starts at Pottery Road at the bottom of the hill. Head north to the paved trail to the first intersection. Take a left, go across the bridge and the trailhead is on your right. It's a high level beginner or low level intermediate trail.

Thanks :D Ya found it on the map ... looks like he started at Cottonwood Flats and went north.