Good spots in Vaughan for a peaceful nature walk?

I’ve been trying to get outside more for my mental health, just simple walks where I can clear my head and maybe take some photos. I know Vaughan has plenty of residential streets and plazas, but I’m looking for something a little greener. Not a full hike, just a flat path with some trees where I won't be constantly dodging strollers or off-leash dogs. I've been to Boyd Conservation Area a few times and it's nice, but sometimes it gets busier than I'd like. I've also tried the trails near Mackenzie Glen but they feel a bit short. I don't mind driving 15 minutes out of the way.
Are there any hidden pockets along the Humber River or near Kleinburg that locals actually use for quiet walks? Also curious about the Kortright Centre. Is that worth paying entry for just a casual walk, or is it more for organized programs? I'd love to hear where you go when you just need some quiet without leaving the city entirely.