Every advance-reservation wilderness campsite the lotteries left unbooked, opened to standard groups on Recreation.gov at 8:00 MT on May 1 in 2026.
Glacier's own wilderness reservations page says that from May 1, 2026 at 8:00 MT until September 30, 2026, all wilderness campgrounds not reserved during the early access lottery period became available to the public on Recreation.gov, with about 70% of wilderness campsites parkwide available for advance reservation. The page publishes no 2027 on-sale date yet.
Updated , checked by hand against the target's own page.
No upcoming date is published yet. A watch here alerts you only once a date is recorded on this page.
More openings to watch in Montana
Watched from nps.gov, the target's own public page — not a reservation system we poll.