Trails maintained by the Ontario Federation of Snowmobile Clubs are not open year-round. While there is not a pre-determined end date, trails close when rapidly deteriorating snow and ice are considered a threat to snowmobile safety, at which time clubs discontinue grooming operations, remove signs and stakes and close gates.
An OFSC Trail permit grants winter enthusiasts access to more than 30,000 kilometers of trails each season. Selecting a trail on the Interactive Trail Guide at ofsc.on.ca brings up the trail name, club affiliation, distance and other features. Trails in red are marked "Unavailable" as they close, while those in green are fully open and trails marked in yellow feature limited availability.