The one-day lottery for the five large-group (9-12 campers) advance reservations Glacier issues each year, held March 1 in 2026.
Glacier's own wilderness reservations page says the 2026 large group lottery took applications on Recreation.gov on March 1, 2026, 12:00 am to 11:59 pm MT, for one of five large-group advance reservations, with winners emailed March 3 and applications due back March 10. After it, large groups can get permits only on a walk-up basis. The page publishes no 2027 lottery 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.