Recreation.gov

When do reservations open at Aspen Grove Group Use Area (Helena-Lewis and Clark NF, MT), Helena-Lewis and Clark National Forest?

Booking window
6 months ahead
Releases
Daily, 7:00 AM PT
Open now
Through Nov 30, 2026

Reservations open 6 months ahead on a daily rolling basis, at 7:00 AM PT. Arrivals through Nov 30, 2026 are open now.

From Oct 28 to Nov 30, 2026, sites are first come, first served: no reservations are taken for those nights. From Apr 1 to May 20, 2027, sites are first come, first served: no reservations are taken for those nights. Nov 30, 2026 is the last night of this season. Next season's first date, Jun 1, 2027, opens on Dec 1, 2026 at 7:00 AM PST.

Open Season: May 16 - Sep 20, 2026 · Last checked Oct 11, 2026

Popular weekends

Month by month

Arrivals Oct 28 to Oct 31, 2026first come, first served
Arrivals in November 2026first come, first served
Arrivals in April 2027first come, first served
Arrivals in May 2027opens Nov 21 to Dec 1, 2026, 6 months before each arrival date
Arrivals in June 2027opens Dec 1 to Dec 30, 2026, 6 months before each arrival date
Arrivals in July 2027opens Jan 1 to Jan 31, 2027, 6 months before each arrival date
Arrivals in August 2027opens Feb 1 to Mar 1, 2027, 6 months before each arrival date
Arrivals in September 2027opens Mar 1 to Mar 15, 2027, 6 months before each arrival date

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