How Campsite Reservations Work: Recreation.gov's Rolling Window Explained

Before you set an alarm for booking day, open the specific campground's page and confirm three things: how far ahead it books, what time new dates release, and in which time zone. Recreation.gov is one system, but each campground sets its own rules. Recreation.gov's own policy page says location-specific policies override its site-wide rules.

The rolling six-month window

Many federal campgrounds on Recreation.gov use a rolling window. The Green Mountain and Finger Lakes National Forests explain it plainly: a six-month rolling window lets you book within six months of the booking date. If you book on January 1, you can reserve any available date through July 1. On January 2, the window moves out to July 2.

"Rolling" means one new day of availability opens each day, not a whole month at once. Yellowstone's camping page describes it the same way: you can book a site exactly six months before the date of your stay. Inyo National Forest lists standard campsites at up to six months ahead and group campgrounds at up to 12 months, so even within one forest, different site types can have different windows.

The window also closes at the near end. Recreation.gov's policies note that cut-off windows vary by location but typically fall between zero and four days before arrival. The Green Mountain and Finger Lakes forests, for example, require reservations at least four days in advance.

What time do new dates open?

Recreation.gov's published policies don't list one release time for every campground. Park and forest pages that do publish a time show why you should check:

• Acadia National Park lists its releases at 10 a.m. Eastern.
• Yosemite National Park releases its non-lottery reservations at 7 a.m. Pacific, which is 10 a.m. Eastern.
• Shenandoah National Park's example of its staggered releases uses 10 a.m.

If the campground's page doesn't give a time, check the facility listing on Recreation.gov or call the reservation line at 1-877-444-6777. Assateague Island lists the line's hours as 10 a.m. to 10 p.m. Eastern. Assateague's page also warns that nearly all weekend reservations there fill the first day they become available.

Parks that don't use a simple rolling window

Some of the most requested campgrounds release sites on their own schedules.

Yosemite: monthly blocks on the 15th. Yosemite's reservable campgrounds in Yosemite Valley, Wawona and Hodgdon Meadow release a month-long block of arrival dates on the 15th of each month at 7 a.m. Pacific. For example, arrivals from May 15 through June 14 open on January 15, and arrivals from June 15 through July 14 open on February 15. Half of Tuolumne Meadows opens two months ahead on the 15th. Several other campgrounds open two weeks ahead on a rolling daily basis, and Camp 4 opens one week ahead. The park says these releases sell out within minutes and limits you to two reservations per website visit or phone call.

Acadia: the first of the month, plus a short-notice release. At Blackwoods, Seawall and Schoodic Woods, 90 percent of sites are released six months ahead on the first of each month at 10 a.m. Eastern. The remaining 10 percent open 14 days before arrival on a rolling basis.

Shenandoah: staggered releases. At Mathews Arm, Big Meadows and Loft Mountain, half of reservable sites open six months ahead, another quarter two weeks ahead and the last quarter four days ahead. The park also notes that reservations for early 2027 are on hold while campground operations move to a new concessioner. It expects to open them in early January and to share details in mid-December.

Cancellations, changes and no-shows

Recreation.gov's general rules for individual campsites work like this. Check your campground's page, since local rules can differ.

• Cancel early: a service fee is withheld from your refund.
• Cancel the day before or the day of arrival: you pay the service fee and also forfeit the first night's fee.
• Don't show up and don't cancel: a larger no-show service fee applies, and you forfeit the first night's fee. Recreation.gov counts you as a no-show if you don't arrive and don't cancel by checkout time the day after your scheduled arrival.
• Change your dates: moving to dates entirely outside your original reservation carries a change fee. Extending or shortening a stay that keeps some original dates doesn't.
• Booking past the window: if your reservation includes dates beyond the maximum booking window, you can't change it until 18 days after you booked.

Some campgrounds set their own cancellation deadlines. Zion's Watchman Campground, for example, lists its deadline in Eastern Time even though the park is in Utah.

State parks run on their own systems

State park reservations don't go through Recreation.gov, and their windows vary widely:

• California State Parks: reservations up to six months in advance through ReserveCalifornia, which adds a nonrefundable processing fee.
• Washington State Parks: up to nine months before the first night of your trip. Same-day campsite bookings are accepted until 2 p.m. on your arrival date.
• Texas State Parks: most overnight stays can be booked up to five months ahead, and the window opens at 8 a.m. Most campsites can still be reserved until 4 p.m. on arrival day if they're available.

Practical tips for booking day

• Do the math early. Count forward from your booking date (or back from your arrival date) and put the release date and time on your calendar, converted to your own time zone.
• Get your account ready. Sign in to Recreation.gov or the state system ahead of time, with your vehicle and payment details already saved, and pick a few acceptable sites in advance.
• Stay flexible. Midweek arrivals and second-choice campgrounds give you more options than a Friday at the most famous campground.
• Watch for cancellations. Yosemite's own advice is to keep checking for cancellations, and Acadia and Shenandoah hold some sites back for short-notice release.
• Look for first-come, first-served sites. Shenandoah's Lewis Mountain is entirely first-come, first-served, and Yosemite runs several campgrounds that way in winter.
• Skip the bots. Booking scripts and scrapers aren't needed for any of this. A calendar reminder and a prepared account do most of the work.

Sources

• Recreation.gov: Rules & Reservation Policies
• Recreation.gov: Watchman Campground, Zion National Park
• USDA Forest Service: Green Mountain and Finger Lakes National Forests, Camping & Cabins
• USDA Forest Service: Inyo National Forest, Camping & Cabins
• NPS: Yellowstone National Park, Campgrounds
• NPS: Yosemite National Park, Campground Reservations
• NPS: Acadia National Park, Camping
• NPS: Shenandoah National Park, Campground Reservations
• NPS: Assateague Island National Seashore, Campgrounds and Reservations
• California State Parks: Camping Reservations
• Washington State Parks: Making Reservations
• Texas Parks & Wildlife: Reservations FAQs

Last verified: November 1, 2026.