Park Drive Reservation lands are tucked away in Rosedale under the Glen Road bridge. This short but beautiful trail is a place I visit often. You can access the trail from Mt. Pleasant Rd. at Roxborough Dr. or via Milkman's Lane near Craigleigh Gardens. It is a part of the Beltline Trail that crosses north-central Toronto.
The Park Drive trail is beside the Yellow Creek, a drainage creek that is part of the Spadina Storm Trunk Sewer. Despite the sewer association the creek is actually quite pleasant and adds a nice water element to the trail environment.