Campground · WA
Harlequin Campground
WA · North Cascades National Park
Harlequin Campground is generally hard to book. Across the 3 months we have reservation data for, difficulty peaks in August (7/10) and eases to its lowest in July (6/10). 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 (August), arrivals are lightest on Tuesday — 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 April 15, 2027 become bookable on October 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
- 7 tent-only sites
Activities: BIRDING, CAMPING, FISHING, HIKING, HUNTING, BIKING, RAFTING