National Park

Great Sand Dunes National Park & Preserve

National Park★ 4.8
Great Sand Dunes National Park & Preserve with orange sand dunes in the foreground and snow-capped Sangre de Cristo Mountains beyond at sunset.

The tallest dunes in North America are the centerpiece in a diverse landscape of grasslands, wetlands, forests, alpine lakes, and tundra. Stay on a moonless night to experience countless stars in this International Dark Sky Park! Open 24 hours a day, 7 days a week year-round. There are no timed entries or reservations to visit.

Plan your visit

Best Time To Visit
Shoulder seasons are milder; July brings peak mosquitoes and wildflowers

Highlights

Why Visit
Great Sand Dunes presents a continental-scale dune field—the tallest dunes in North America—shaped by wind and seasonal Medano Creek. The landscape sits high, with climate variation and wildlife that depend on a narrow habitat corridor. Management prioritizes safe, regulated access and wildlife protection to sustain the resource for future generations.
Top Things To Do
Tallest dunes in North America, sand sledding/sandboarding, Medano Creek (seasonal), stargazing

Areas to plan around

Dunes Core
Tallest dunes in North America; Dunes Overlook Trail; dune field activities
Medano Creek & Wetlands
Seasonal creek flow; wildlife viewing opportunities
High Country Trails
Star Dune hike; Mosca Pass Trail; wildlife opportunities
Gateway & Overnight Access
Gateway towns (Alamosa, Mosca); Piñon Flats Campground; backcountry access

Getting there & around

Getting There Airports
Closest: San Luis Valley Regional Airport (ALS) in Alamosa; larger hubs: Colorado Springs (COS) or Denver (DEN)
Getting There Driving Distances
Alamosa ~35 miles away; Mosca gateway nearby
Getting There Entrances
Main gate on US-160 near Mosca, CO
Getting Around Reservations
Ticket required to enter; no timed-entry reservations; backcountry permits may be required; check at Visitor Center
Getting Around Parking
Parking lots can fill early in peak season; arriving early recommended; no published RV length limits on main park roads

Where to stay

Where To Stay Inpark Lodging
Piñon Flats Campground (Apr–Oct)
Where To Stay Campgrounds
Piñon Flats Campground (Apr–Oct)
Where To Stay Gateway Towns
Alamosa (35 miles away) and Mosca nearby

Safety & wildlife

Safety Bear Country
Food storage required by law; keep food in a vehicle or steel lockers; bears may be present
Safety Weather
High altitude (~8,200 ft); extreme temperatures; strong winds; lightning risk in spring/summer
Safety Altitude
≈8,200 feet
Safety Leave No Trace
Pack it out; stay on designated trails
Safety Permits Needed
Backcountry permits may be required; check at Visitor Center
Wildlife Overview
Elk and pronghorn may be seen in grasslands
Wildlife Where To See
Grasslands surrounding the dunes; early morning/evening hours best
Wildlife Safety
Maintain a safe distance from all wildlife; do not feed wildlife

Trip strategy

Itinerary Strategy
Day 1: Dunes loop via Dunes Overlook; Day 2: Mosca Pass Trail + Medano Creek; Day 3: Dune sunrise/sunset photography and stargazing
Entrance Hacks
Main gate on US-160; parking can fill early in peak season; arrive before 7am in busy periods
Basecamp Logic
WEST SIDE offers easier access to services and longer visiting windows; EAST SIDE provides closer proximity to dunes and Mosca Pass; split stays if possible
Crowd Calendar
July is peak mosquitoes and wildflowers. September is crowd-free but chilly. June can be too snowy for the full road.
Tips Advice
  • Buy pass online;
  • Medano Pass Road is seasonal;
  • No shuttle system;
  • Don’t feed wildlife

More details

Park Code
grsa
Tagline
National Park and Preserve
Entrance Fee
$25.00 - Entrance - Private Vehicle
Quick Facts Entrance Fees
7-day vehicle access: $25, 7-day motorcycle access: $20, 7-day per person access: $15. Digital passes available via Recreation.gov. America the Beautiful Passes (including Senior and Military) accepted
Nearby Services
Gateway towns: Alamosa (35 miles); Mosca nearby; services in gateway towns
Family Friendly Notes
Junior Ranger programs offered seasonally; verify scheduling at the Visitor Center
Accessibility
ADA information varies by facility; verify at the Visitor Center
Photography Tips
Position for sunrise/sunset over dunes; avoid blocking traffic on dunes; respect wildlife and other visitors
When To Visit Peak Season
May–August
When To Visit Shoulder Season
April–May and September–October
When To Visit Winter
Open year-round; Piñon Flats Campground open Apr–Oct; winter may have snow; Medano Creek frozen
When To Visit Road Opening
Medano Pass Primitive Road typically open mid-May through late November; subject to winter closures
Weather Averages
Variable by season; high desert climate; cool nights at elevation
Weather Precipitation
Spring storms with lightning; arid conditions; snow possible in cooler months
Weather Info
Temperatures are relatively cool all year at the park elevation 8000 ft. Conditions are most often calm, but winds can arise, especially in spring and during storm fronts. Daytime temperatures feel warmer here year round due to intense high-altitude sunlight, and mid-day summer sand surface temps can be 160 degrees F! Plan to explore the dunes morning or evening during summer. Nights are cool in summer, and frigid in winter. Visit https://nps.gov/grsa/planyourvisit/weather.htm for details
What To Bring Essential Gear
Bear spray, layers, plenty of water
What To Bring Clothing
No cotton; wool/synthetic layers; sun protection
Review Summary
Visitors often underestimate crowds in peak season; plan to arrive early and move efficiently; the scale of the dunes and the isolation of the night sky reward careful preparation and rule compliance

Location

Grasslands, large dunes, and snow-capped peaks at sunsetGirls Sand SleddingElk, Grasslands, Dunes, and Sangre de Cristo MountainsLower Sand Creek Lake, Great Sand Dunes National PreserveUpper Sand Creek Basin, Great Sand Dunes National Preserve

Frequently asked questions

Do I need a reservation to visit Great Sand Dunes?

No timed-entry reservations are required; you can visit without booking in advance.

Is Medano Pass Road open year-round?

Medano Pass Primitive Road is typically seasonally open mid-May through late November; winter closures are possible.

Are pets allowed in the dunes?

Pets are allowed in the main dune area and on the Dunes Overlook Trail and Medano Pass Primitive Road; they must be leashed.

Is backcountry camping permitted and do I need a permit?

Backcountry camping is possible year-round with winter conditions; check at the Visitor Center for any permit requirements.

What is the main gate and where should I park?

Main gate is off US-160 near Mosca; parking can fill quickly in peak season, so arrive early.

Essential Great Sand Dunes National Park & Preserve guides

Use these first for the decisions that affect the whole trip. Every guide is part of this park's planning library.

More guides

One Day in Great Sand Dunes National Park

Explore North America's tallest dunes at sunrise, splash in Medano Creek, and stargaze at a Dark Sky Park—complete one-day itinerary for Great Sand Dunes Nation

Hike Sand Creek Lakes

Alpine lakes at 11,500 ft. 8 miles, 2k gain. 4WD access + full-day commitment. Snow blocks Nov–June.

Splash in Medano Creek

Rare surge waves + wading creek for all ages. Crowded peak season, but early-morning weekdays shine. Spring only.

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Crestone

Spiritual hub 30min from Great Sand Dunes. Limited services; stock up elsewhere.

Hooper

Tiny rural village with minimal services. Plan ahead for gas and food.

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All Great Sand Dunes National Park & Preserve guides 7 published

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Last updated August 2026. Report an issue.