Chamberlain Trails in Gravenhurst. One of the trail heads is within a few hundred metres of my house so my dog Blue and I often use this for his afternoon/evening run.
Not extensive trails but close at hand and rarely meet anyone!! There is ~ 4K of trail so the out and back makes about a 1 hr ride.
Also some nice off-trail riding so one could be a couple of hours happily playing in there, especially with a fat bike.
Nice way to wrap up the work day, and Blue loves it too. A few pics from today's ride...