How to Get a Subway Permit in Zion National Park

Why The Subway needs a permit at all

The Subway is a slot canyon section in the Left Fork of North Creek, on the west side of Zion National Park, nowhere near the main canyon road. It is narrow, it is cold, and in places the only way forward is through water. It is also one of the most photographed pieces of rock in a park full of photographed rock, which is exactly why the permit system exists: without one, the canyon would be trampled and queued like a theme park attraction, and the resource would degrade fast.

So yes — you need a permit for The Subway, in both directions, in every season. There is no casual version of this hike. If you show up at the trailhead without one, you turn around, and the drive to the trailhead is not short.

The good news is that the permit system is genuinely winnable if you understand how it works before you apply. Most people lose out not because demand is impossible but because they apply late, apply for the wrong permit type, or treat the whole thing as an afterthought. Here is how to not be that person.

Two permit types, and why the difference matters

The park issues two kinds of Subway permit, and picking the wrong one is the most common application error.

The day hiking permit covers the bottom-up route. You walk up the Left Fork from the trailhead, reach the Subway itself from below, and walk back out. This is the version most people picture: strenuous, involving a lot of boulder-hopping and creek crossings, but not requiring ropes or technical descending gear. You do not need canyoneering experience for it. You do need honest legs and decent balance.

The canyoneering permit covers the top-down route. You descend into the canyon from the rim and travel downstream through it, which involves rappelling and swimming or wading through cold, sustained water. This is a technical route. If the words "rappel" and "anchor" are not already part of your vocabulary, this is not the permit for you, and the park will expect you to know what you are doing.

Neither route is easy. The bottom-up route is the harder walk and the easier skill set; the top-down route is the easier walk and the much harder skill set. Choose based on what your group can actually do, not on which photo you saw.

For a broader picture of how the park handles permits generally — including the other quota systems you may run into — see our guide to Zion National Park permits.

The lottery: how it works

Advance permits for The Subway are distributed through a seasonal lottery system run through Recreation.gov. The mechanics are simple:

• The year is divided into seasons, and each season has its own application window.
• You apply during the window, listing the dates you want and your route type.
• After the window closes, the lottery runs and results are posted. If you win, you then confirm and pay for the permit.

The single most important thing to understand is that the application window for a season opens months before that season begins. People routinely decide in spring that they would like to do The Subway in early summer, only to find the lottery for those dates closed long ago. Check the current season's dates on Recreation.gov before you build any trip around this hike.

A few things that improve your odds and your outcome:

• Apply with flexible dates. If your application can accept several possible days, you are more likely to end up with one of them.

• Apply for weekdays if you possibly can. Weekend dates draw the most entries.

• Be realistic about group size. Larger groups are harder to place. Permits have a maximum group size, and if your party exceeds it, you are not getting one permit for everyone — plan to split or trim before you apply, not after.

If you are new to the park generally, pair this planning with our Subway trail guide for a full description of the route itself.

Walk-in permits: the backup plan

Not every advance permit gets claimed, and the park releases a small number of permits the day before, in person, at the Zion Canyon Visitor Center. This is the walk-in lottery, and it is a real option — but it is a gamble, not a plan.

The practical reality:

• Demand for walk-in permits far exceeds supply in peak season. Showing up and hoping works occasionally, and fails constantly.
• You need to be there in person, for the drawing, the day before your intended hike. That means your trip needs a spare day built around a maybe.
• Shoulder season and midweek dates are where walk-in odds improve meaningfully. A Saturday in September is close to hopeless; a Tuesday in November is a genuine possibility.

If your entire itinerary collapses without a Subway permit, do not build it on the walk-in window. Apply to the advance lottery, and treat the walk-in drawing as your fallback, not your strategy.

Planning considerations that decide whether your day is good

Getting the permit is the first filter. These are the others:

Group size. The maximum is small, and it exists for reasons of both safety and canyon impact. Count your group before you apply. If you have more people than the permit allows, someone is being disappointed either way — better at the kitchen table than at the trailhead.

Gear. Even the non-technical bottom-up route involves deep wading and cold water. Neoprene socks or a wetsuit depending on season, sturdy shoes with real grip, a dry bag for anything you cannot afford to soak, and enough food and water for a longer day than the mileage suggests. Our Zion hiking gear guide covers the specifics. For the top-down route, add a full technical kit and the competence to use it.

Weather and flash flood risk. The Subway is a drainage, and slot canyons and flash floods are a lethal combination. Check the forecast obsessively in the days before your hike, and take a flash flood watch seriously — a permit does not override weather, and rangers will close the route when conditions warrant. Our page on Zion Narrows weather covers the same flood dynamics that apply here.

Navigation. The approach involves route-finding on slickrock and the exit climbs steeply out of the canyon. People get lost on this route every year, usually on the way out when they are tired. Carry a map, know the route, and start early enough that you are not descending the slickrock in failing light.

Common mistakes

• Applying for the wrong permit type. Day hiking permit, bottom-up route. Canyoneering permit, top-down. Match them.
• Missing the seasonal application window. The most common failure, and the most avoidable.
• Treating the walk-in lottery as a plan. It is a backup.
• Underestimating the water. Cold, sustained wading is part of this hike even in the dry season.
• Ignoring the flash flood forecast. The single most dangerous mistake on this list.
• Bringing too many people. Split the group or shrink it before you apply.

If you don't get a permit

It happens to most first-time applicants at least once. Your options: enter the next seasonal lottery, try the walk-in drawing if your schedule allows, or pick a different day entirely. And remember that Zion is a park with a great deal else in it — the main canyon, the Narrows, the east side — none of which requires you to have won anything.

Apply early, apply for the right route, build in a spare day, and check the weather. Do that, and The Subway goes from a long shot to a well-planned day in one of the best slot canyons in the American Southwest.