Dune grass and sand ripples at White Sands Hiroooooo · Commons · CC BY-SA 4.0

Tularosa Basin

Alkali Flat Trail

Big dunes. A deliberate day on foot.

Hiroooooo · Wikimedia Commons · CC BY-SA 4.0

Know the route before you go

Alkali Flat crosses steep, soft gypsum dunes to the edge of an ancient lakebed. NPS calls it strenuous. The current route is five miles out and back, so plan the return before you take the first dune.

Before you start

Distance: 5 miles out and back
Difficulty: Strenuous
NPS average: About 3 hours

Check the current trail

The current NPS trail page replaces older loop descriptions.

Road access & closures

The current five-mile route

Hiking

Outward: 2.5 miles over the dunesFollow the red markers to the edge of Alkali Flat, the dry bed of Ice Age Lake Otero.
Return: the same 2.5 milesSave time, energy and water for the walk back to your car.

The NPS trail page, updated July 24, 2026, replaces older loop descriptions. Despite the name, the walk is continuously up and down dunes. Allow extra time beyond the park’s three-hour average for rests and changing conditions. You do not need to reach the far end to have a worthwhile visit.

Follow the red diamond markers

Hiking

Find the next red diamond before moving onIf the next marker is out of sight, return along the marked route. Blowing sand and fallen posts can break the visible line.

Wind can erase footprints. Carry a park map and compass, stay together, and do not rely on GPS or phone service alone. Tell someone outside your group your route and expected return time.

Water and temperature come first

Plan ahead

Water per person, per day: At least 1 gallon
Do not start a hike at: 85°F / 30°C or above
Turn back when: Half your water is gone

Adobe visitor center at White Sands, with its 2014 National Monument sign — White Sands visitor center, 2014 Jengod · Commons · CC BY-SA 3.0

These are NPS guidelines. There is no water, shade or toilet on the trail; fill up at the visitor center before driving in.

A cool morning is not a promise of a safe afternoon. Wear sun protection and adjust the plan before heat or dwindling supplies make the decision for you.

Getting to the trailhead

Scenic drive

Dunes Drive beside the Dune Life Nature Trail, with white dunes and mountains beyond — Dunes Drive and Dune Life Nature Trail Pablorgalindo · Commons · CC BY-SA 4.0

The trailhead is near the far end of Dunes Drive, about seven miles from the visitor center. A vault toilet is at the parking area; there are none along the hike.

Be off the trail by sunsetLeave the park before its posted closing time.

Check Dunes Drive hours and military-test closures before leaving town. A road closure prevents access to the trailhead.

Trail rules and changing weather

Plan ahead

On foot only. Bikes, horses and motorized vehicles are not allowed on the trail.
Pets stay leashed. Keep the leash no longer than six feet, maintain control, carry water for them and pick up waste.
Leave the dunes intact. Avoid plants and fragile soil crust; leave sand and natural objects in place.
Leave unfamiliar debris alone. Do not touch objects from the surrounding missile range. Note the location and tell a ranger.

Wind can sharply reduce visibility, and winter brings shorter days and cold conditions. Keep the same navigation and turnaround checks in every season.

Questions before you go

Is Alkali Flat a loop or an out-and-back?

The current NPS trail page describes a five-mile out-and-back: 2.5 miles each way. Older pages and maps may still call it a loop. Follow current signs and ranger guidance.

How difficult is it?

Strenuous. Soft sand and repeated dune climbs make the distance demanding. NPS lists an average completion time of three hours; give yourself extra margin.

How much water should I carry?

NPS recommends at least one gallon per person per day. Fill up at the visitor center, and turn back when half your water is gone.

What if I lose sight of the markers?

Do not continue into unmarked dunes. Return along the visible marked route. Wind can hide both posts and footprints.

Can I hike in summer?

NPS advises not starting a hike at 85°F (30°C) or above. Check the forecast and current temperature, and choose a shorter visit when conditions are unsuitable.

Sources & photo credits

Official visitor information: Current NPS trail description, Hiking safety, Trail choices, Dunes Drive hours, Road closures.

Photography via Wikimedia Commons. Images resized and cropped for layout; individual credits and reuse licenses are listed below.

View image sources & credits

Dune grass and sand ripples at White Sands, by Hiroooooo, CC BY-SA 4.0, resized and re-encoded as WebP, via Wikimedia Commons. CC BY-SA 4.0 reuse terms.
White Sands visitor center, 2014, by Jengod, CC BY-SA 3.0, resized and re-encoded as WebP, via Wikimedia Commons. CC BY-SA 3.0 reuse terms.
Dunes Drive and Dune Life Nature Trail, by Pablorgalindo, CC BY-SA 4.0, resized and re-encoded as WebP, via Wikimedia Commons. CC BY-SA 4.0 reuse terms.
White Sands at sunset, by dconvertini, CC BY-SA 2.0, resized and re-encoded as WebP, via Wikimedia Commons. CC BY-SA 2.0 reuse terms.
US-82 at its junction with NM-130, by Denver Gingerich, CC BY-SA 2.0, resized and re-encoded as WebP, via Wikimedia Commons. CC BY-SA 2.0 reuse terms.

Guide details checked September 22, 2026. Confirm current conditions before traveling.