Campground · MT
Holter Lake Campground
Booking is hardest here in May (6/10) and easiest in September (4/10). Pick a month below for the full breakdown.
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 January 15, 2027 become bookable on July 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