National Park Timed Entry in 2027: Which Parks and How to Book

Last updated October 23, 2026 · By Atlas Travel Guides Editorial Team

Start with the thing most pages about this get wrong: an America the Beautiful pass does not get you a timed entry reservation. The pass covers entrance and day-use fees. A timed entry or vehicle reservation is a separate booking, on Recreation.gov, with its own fee. You need both. The National Park Service says so in its own words on its fee-free-days listing — admission is free on those dates, but “other fees, including timed entry or reservation fees, may apply.”

Second thing: the list of parks requiring timed entry got dramatically shorter in 2026, not longer. Arches, Glacier, Yosemite and Mount Rainier all dropped their systems. Rocky Mountain was left as the only major park running a park-wide one.

Third, and this is the honest part: as of late October 2026, no park had published its 2027 rules. Parks typically announce in late winter — the NPS release that reshaped 2026 came out on 18 February 2026. What follows is the verified 2026 position, which is the right baseline to plan against, plus exactly what to check and when.

The 2027 situation in one paragraph

Nothing is confirmed yet. The Park Service’s February 2026 announcement said parks that are not using timed entry “will closely monitor visitation, traffic flow and congestion” and are “prepared to implement additional measures if conditions warrant” — so the parks that dropped systems could bring them back, and the one that kept its system said nothing about ending it. Bookmark each park’s own page, and check it in February of the year you travel.

What applied in 2026 (and what to expect for 2027)

All dates and prices above are the 2026 figures as published by the NPS and read in October 2026. The 2027 equivalents had not been announced.

Rocky Mountain: the one that matters

Rocky Mountain National Park is the system to understand, because it is the most restrictive and because it is the one the Park Service explicitly said would continue.

There are two different reservations, and buying the wrong one is the most common error:

• Timed Entry — covers everywhere except the Bear Lake Road corridor. Required 9 a.m. to 2 p.m. daily.
• Timed Entry + Bear Lake Road — covers Bear Lake Road and everywhere else. Required 5 a.m. to 6 p.m. for the corridor.

If your plan includes Bear Lake, Moraine Park, Sprague Lake or the Glacier Gorge trailhead, you need the second one. The first will not get you up that road.

The rules that catch people out:

• It applies to the whole park, not just the main gates. Outlying areas — Lily Lake, Longs Peak, Lumpy Ridge, East Inlet, North Inlet — all require a reservation during the hours it is in effect, whether you park inside the boundary or outside it. For those areas you must print the confirmation and display it on your dashboard.
• Trail Ridge Road counts. Driving over it between 9 a.m. and 2 p.m. requires a reservation.
• Entry is within a two-hour window. Arrive late and you may be turned around and told to come back after 2 p.m. Entrance queues can run 30 minutes or longer, so the window is tighter than it looks.
• Bear Lake re-entry is only after 2 p.m. Leave the corridor and you cannot go back in before then.
• One reservation per vehicle per day, and one per Recreation.gov account per day. The named holder must be in the vehicle with photo ID. Non-refundable, non-transferable.
• Entering before 9 a.m. or after 2 p.m. needs no reservation at all. This is the free workaround and it is officially sanctioned.

Several things substitute for a reservation: campground bookings at Aspenglen, Glacier Basin, Moraine Park or Timber Creek (valid from 1 p.m. on your first day), wilderness backpacking permits, horseback riding reservations, and commercial tours under a CUA. Cyclists entering by bike do not need one. The first-come Longs Peak Campground does not include one.

For scale: the park sets daily capacity at 90 percent of maximum parking capacity, about 20,000 visitors or 7,200 vehicles over 24 hours. The system came out of a Day Use Visitor Access Plan finalised in May 2024, after what the park describes as a 44 percent rise in visitation over 11 years.

The targeted reservations

These are narrower than a park-wide system — they gate one road, one hour band or one cave — and they are the ones most likely to survive from year to year, because they manage a physical bottleneck rather than a whole park.

Acadia, Cadillac Summit Road. The road up to the summit is reservation-only in season — 20 May to 25 October in 2026, $6 per vehicle, Recreation.gov only, never sold at the park. The release structure is unusual and worth planning around: 30 percent go on sale 90 days ahead and 70 percent two days ahead, both at 10 a.m. Eastern. If you miss the 90-day window, the bigger tranche is still coming. Acadia’s own page is blunt that you “must have a park entrance pass to enter the park in addition to purchasing a vehicle reservation.”

Haleakalā, summit sunrise. A reservation is required for each vehicle entering the Summit District between 3 a.m. and 7 a.m. — and only then. Arrive after 7 a.m. and you need nothing. The fee is $1 per vehicle, on top of the entrance fee. Reservations open 60 days ahead with a further portion released two days ahead, both at 7 a.m. Hawaii time. The park’s own FAQ warns that the online inventory “often sells out within fifteen minutes”, and that there are no refunds or exchanges if clouds wipe out the sunrise. They are not issued at the entrance station, so there is no turning up and hoping. Our Haleakalā sunrise guide covers the drive and the cold.

Carlsbad Caverns. A $1 cavern entry reservation applies year-round, separate from the $15 per-person entrance fee.

Muir Woods. Every vehicle and every shuttle rider needs a reservation, year-round — and the booking is at GoMuirWoods.com, not Recreation.gov, which trips up people who search the usual place and conclude none is needed. The $15 per-person entrance fee is separate, and the parking fee still applies on national fee-free days. Hikers, cyclists and ride-share passengers are exempt.

The parks that dropped it

On 18 February 2026 the Park Service announced a round of changes for that summer:

• Arches “will not implement a timed entry reservation system in 2026.” Fiery Furnace hikes and the Devils Garden campground still need bookings, and the park can divert vehicles at the gate when areas fill. An older Arches timed-entry page is still live and says otherwise — ignore it in favour of the newer release. See our Arches and Canyonlands guide.
• Glacier “will not require a park-wide vehicle reservation system in 2026,” replacing it with a ticketed-only shuttle and three-hour limited timed parking at Logan Pass, plus active management of Going-to-the-Sun Road and temporary diversions at safety thresholds. More in our Glacier guide.
• Yosemite “will no longer use a timed reservation system in 2026,” including during peak summer and the February–March firefall period, after concluding that “a season-wide reservation requirement is not the most effective approach for 2026.”
• Mount Rainier announced on 25 February 2026 that timed entry would not be required anywhere in the park, abandoning the 2025 Sunrise Corridor pilot in favour of parking management.

The common thread is a shift from gating entry to managing parking and traffic in real time. The practical consequence for you is that these parks now turn people away at the gate when lots fill instead of before you leave home. Arriving early matters more than it used to.

Things that look like timed entry but are not

Three systems get lumped in with timed entry and work differently.

Zion’s Angels Landing permits are a lottery, not a first-come release. Seasonal lotteries open on the 1st and close on the 20th of January, April, July and October, with results five days later, covering the following three months of hiking dates. There is also a day-before lottery, open 12:01 a.m. to 3 p.m. Mountain Time, with results after 4 p.m. It costs $6 per application for up to six people, plus $3 per person if you are selected. Zion itself needs no entry reservation — only the hike does. Our Zion guide has the rest.

Great Smoky Mountains parking tags are not reservations and not timed. They are $5 daily, $15 weekly or $40 annually per vehicle, needed if you park for more than 15 minutes. The park states outright that America the Beautiful passes “are not accepted in place of a parking tag” — another version of the same misconception. Tags are waived on fee-free days. See the Great Smoky Mountains guide.

Campground and backcountry permits are separate systems again, usually with their own, much longer booking windows — covered in our national park camping booking guide.

The fee picture, since it keeps changing

The America the Beautiful pass is $80 for US citizens and residents, with a Senior Annual at $20, a Senior Lifetime at $80, and free Military, Access and 4th Grade passes. A Non-Resident Annual Pass costs $250.

Two changes landed for 2026 and are worth knowing before you budget:

• A $100 nonresident fee applies to non-US residents aged 16 and over, on top of the regular entrance fee, at Acadia, Bryce Canyon, Everglades, Glacier, Grand Canyon, Grand Teton, Rocky Mountain, Sequoia & Kings Canyon, Yellowstone, Yosemite and Zion — unless you hold an Annual or America the Beautiful pass.
• Free entrance days now apply to US citizens and residents only. Nonresidents pay the regular fee and any nonresident fee.

None of this touches reservation fees, which sit on top of everything.

How to plan a 2027 trip now

1. Assume the 2026 rules until a park says otherwise. Rocky Mountain is the one to plan around.
2. Check each park’s own page in February. That is when the 2026 announcements landed, and when the 2027 ones are most likely.
3. Use the official list, not a blog. The NPS maintains a filterable table of parks with reservations and a passes and reservations overview. Stale third-party lists are the main source of bad information on this topic — including, in time, this page.
4. Diarise the release moment, in the right time zone. 8 a.m. MDT, 10 a.m. ET and 7 a.m. HST are all different alarms.
5. Know your fallback. Night-before releases at Rocky Mountain, the two-day tranche at Acadia and Haleakalā, and the before-9-a.m. workaround all exist for a reason.
6. Buy the pass anyway if you are visiting three or more fee parks — just do not expect it to open a gate that needs a reservation.

Everything here was verified against NPS pages in October 2026. Because these rules change annually and most guides do not keep up, confirm on the park’s own site in the weeks before you book. Our shoulder-season guide covers the other way to dodge all of this: going when the systems are not in effect.