Cadillac Summit Road
Acadia National Park
Timed-entry reservation · Cadillac Summit Road · late May – late Oct 2026
Get a reminder ↓
Official page ↗
Backcountry camping
Glacier National Park
Permit required · Backcountry camping · advance lottery opens mid-March
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Official page ↗
Going-to-the-Sun Road vehicle reservation
Glacier National Park
Timed-entry reservation · Going-to-the-Sun Road vehicle reservation · summer season
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Official page ↗
Phantom Ranch lodge
Grand Canyon National Park
Lottery · Phantom Ranch lodge · lottery opens 15 months ahead
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Official page ↗
Overnight backcountry camping
Grand Canyon National Park
Permit required · Overnight backcountry camping · applications open ~5 months ahead
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Official page ↗
Parking tag required
Great Smoky Mountains National Park
Permit required · Parking tag required · $5/day, $15/week, $40/year (year-round)
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Official page ↗
Synchronous fireflies viewing
Great Smoky Mountains National Park
Lottery · Synchronous fireflies viewing · early-May application for the June event (~22,000 apply)
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Official page ↗
Wilderness overnight camping
Rocky Mountain National Park
Permit required · Wilderness overnight camping · reservations open ~1 March
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Official page ↗
Timed Entry Plus (Bear Lake Road corridor)
Rocky Mountain National Park
Timed-entry reservation · Timed Entry Plus (Bear Lake Road corridor) · late May – mid-Oct
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Official page ↗
Backcountry camping permit
Yellowstone National Park
Permit required · Backcountry camping permit · advance reservations open early; walk-ups limited
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Official page ↗
Peak-hours entry reservation
Yosemite National Park
Timed-entry reservation · Peak-hours entry reservation · required on busy summer days (~6am–2pm)
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Official page ↗
Half Dome cables permit
Yosemite National Park
Lottery · Half Dome cables permit · preseason lottery (March) + daily lottery
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Official page ↗
Angels Landing permit
Zion National Park
Lottery · Angels Landing permit · seasonal + day-before lottery
Get a reminder ↓
Official page ↗
Windows and exact dates change every year — always confirm and book on the official site. Booking links go to the National Park Service / Recreation.gov.