McCrae Lake Nature Reserve on eastern Georgian Bay is an easily reached (and free) year-round hiking opportunity. The trail head is just off the 400, accessed from Crooked Bay Rd. I prefer to use it in the winter. I was there earlier this month, checking out the trail conditions. There’s a good guide to the trails on Trails.com, a free app. You can also see the trails on Topo Maps Canada, a great free app that uses official government topographical maps (shown), although the trail marks don’t entirely align with the ones on Trails.com, which is the better guide to them.
Wild Great Lakes 