Campground · MT
Holter Lake Campground
Holter Lake Campground is generally hard to book. Across the 5 months we have reservation data for, difficulty peaks in May (8/10) and eases to its lowest in September (4/10). The heat strip below breaks down every month — pick one for its full odds, lead-time chart, and easier nearby alternatives.
Booking difficulty by month
Midweek tip: in the busiest month (May), arrivals are lightest on Wednesday — shift your dates to improve your odds.
When reservations open
Booking window
Reservations open on a rolling 6-month window at 7:00 AM America/New York.
For example, sites for February 15, 2027 become bookable on August 15, 2026. Set a reminder a few minutes before release for the best shot.
Standard Recreation.gov 6-month rolling window: sites become bookable 6 months before arrival at 7:00 AM ET.
Sites & amenities
- 42 RV sites
- 3 accessible sites
- Max RV length 68 ft
Activities: KAYAKING, MOUNTAIN BIKING, PADDLE BOATING, PADDLING, PICNICKING, RAFTING, SCENIC DRIVE, SWIMMING, WATER ACTIVITIES, SWIMMING SITE, WATER ACCESS, WATER SKIING, WATER SPORTS, WILDLIFE VIEWING, CAMPING, BIRDING, BOATING, CANOEING, HISTORIC & CULTURAL SITE, ICE FISHING, INFORMATION SITE, JET SKIING, DAY USE AREA, FISHING, HIKING, PHOTOGRAPHY