Trail

Moderate Hike into Haleakalā’s Crater

Trail
A trail leads down into a colorful volcanic valley.

This moderate out-and-back hike descends 1 mile down the Keoneheʻeheʻe (Sliding Sands) Trail into Haleakalā's volcanic crater on a steep, sandy cinder slope. The descent is deceptively easy; the return tests you at altitude. The crater floor sprawls below scattered with cinder cones (puʻu) formed within the last 1,000 years—raw volcanic geology on display. You'll find the endangered ʻāhinahina silversword clinging to life where few plants survive. Full sun, constant wind, loose footing, 10,000 feet elevation: this is a grit check. The payoff is profound—you're inside an otherworldly volcanic arena.

Quick facts

Distance Miles
2
Route Type
Out-and-back
Difficulty Level
Moderate
Elevation Gain Feet
500

Trail profile

Distance Miles
2
Route Type
Out-and-back
Difficulty Level
Moderate
Elevation Gain Feet
500
Estimated Time
1.5–2.5 hours typical. 1–1.5 hours if you're fit and altitude-acclimated; 3+ hours if you move slowly at high elevation.
Trail Surface
Loose volcanic cinder and sandy terrain
Trail Features
  • Crater views
  • Cinder cones (puʻu)
  • Volcanic landscape
  • ʻāhinahina (Haleakalā silversword—endangered endemic plant)
  • Recent volcanic activity—youngest cinder cone ~1,000 years old
Trail Highlights
Stand inside one of Earth's most alien ecosystems at 10,000 feet. The crater floor sprawls below scattered with cinder cones of different ages, the youngest erupted within the last 1,000 years. Witness the rare, endangered ʻāhinahina silversword adapted to survive intense sun and desert conditions where almost no other plant can exist. This is raw volcanic geology: wind, exposure, and the profound silence of stone.

Trailhead & access

Trailhead Location
Keoneheʻeheʻe Trailhead, located at the Haleakalā Visitor Center parking lot
Shuttle Required
0
Shuttle Details
No shuttle required. The trailhead is at the Haleakalā Visitor Center parking lot where facilities and water are located.

Permits & conditions

Permit Details
No separate trail permit required. Timed entry reservation is mandatory only if entering the park between 3am–7am daily. Reservations can be made up to 60 days in advance and 2 days prior to entry.
Fees
$30 per private vehicle (valid 3 days); youth 15 and under admitted free; America the Beautiful annual pass ($80) covers entry
Trail Status
Open
Seasonal Closures
None. The Summit District is open 24 hours daily year-round.

Facilities & rules

Restrooms At Trailhead
1
Water Sources
Water fountain and restrooms at the Haleakalā Visitor Center at the trailhead. No reliable water sources on the trail itself. Carry all water you'll need—2+ liters minimum recommended.
Accessibility
Not wheelchair-accessible. The first quarter-mile is rocky but relatively flat. Beyond that point, the trail becomes steep with loose cinder that makes footing difficult and dangerous for those with mobility limitations.

Safety & strategy

Hazards
  • High altitude (10,000 ft)
  • Steep sandy/cinder terrain
  • Loose, unstable footing—ankle twists common
  • Intense sun exposure—dehydration risk
  • Constant wind
  • Rapid elevation change—altitude-related fatigue possible
Hazard Details
The loose cinder surface shifts underfoot, particularly on descent, creating ankle-twist hazards. The return climb is steep and unrelenting at high altitude, which can trigger fatigue or mild altitude discomfort in unacclimatized hikers. Sun exposure is extreme with no shade; dehydration can occur rapidly in the dry, windy volcanic environment. Wind is constant and can unbalance hikers on narrow sections or steep switchbacks.
Crowd Level
High. This is among the most popular hikes in the park thanks to its unbeatable crater views and accessibility relative to difficulty.
Peak Crowd Times
Sunrise to mid-morning. Early arrival is essential to secure parking and avoid afternoon fog and crowds.
Best Season
Year-round operation. Spring and fall offer the most stable weather. Winter is Hawaii's rainy season with increased afternoon fog and storm risk.
Best Time To Visit
Start before 7am to beat afternoon heat, fog, and crowds. Early morning light illuminates the crater cones and you'll avoid the afternoon storms common in Hawaii year-round. Note: If entering the park between 3am–7am, you'll need a timed entry reservation (book at recreation.gov up to 60 days in advance).
Tips Advice
  • Bring 2+ liters of water minimum. No reliable water sources on the trail; dehydration at 10,000 ft happens fast.\n
  • Start before 7am to avoid afternoon fog, storms, and heat.\n
  • Zero shade on cinder slope. Wear sunscreen, hat, sunglasses. Wind is relentless.\n
  • Tighten your boots. Loose cinder is unstable underfoot—ankle twists are common.\n
  • Trekking poles reduce knee stress on the steep descent and help anchor you on the return climb.\n
  • On the return, take switchbacks slowly and deliberately. The climb at altitude is harder than the descent.\n
  • Make noise on the trail. Nēnē (Hawaiian geese) are present but non-aggressive.

More details

Park Area
Haleakalā Summit District
Trail Markers
Well-marked established park trail. The Keoneheʻeheʻe Trail is one of the park's most popular routes with clear signage.
Dogs Allowed
No. Pets are not permitted on trails or in the Haleakalā Wilderness Area.
Biking Allowed
No. Hiking only. This is a designated foot-traffic trail in the Wilderness Area.
Shade Level
Full sun. The windswept cinder slope offers zero shade. Sun exposure is intense and constant.
Map Recommended
1
Mud Season
Winter (November–March) is Hawaii's rainy season. Afternoon showers are common; volcanic soil drains quickly but muddy conditions can occur on the upper sections.
Insider Tips
  • The 'natural overlook' at 1 mile isn't the absolute trail end—switchbacks continue below—but the 1-mile point is the recommended moderate turnaround with stellar views.\n
  • The descent feels deceptively easy; the return climb will humble you at altitude. Pace accordingly and take breaks.\n
  • Early light (6–8am) illuminates the cinder cones beautifully and minimizes afternoon cloud cover.\n
  • The ʻāhinahina silversword plants are fragile and endangered. Stay on trail to protect them.\n
  • The return climb is roughly twice as long as the descent. Budget your energy accordingly.
Family Friendly Notes
The high altitude (10,000 ft), steep terrain, loose footing, and intense sun make this trail challenging for young or inexperienced children. Hand-holding is required on steep sections. Children must be confident, experienced hikers. Families just arriving in Hawaii should acclimatize at lower elevations first before attempting this hike.
Nearby Facilities
Haleakalā Visitor Center at the trailhead provides restrooms, water fountain, and educational exhibits. No food, fuel, or services beyond this point. Plan and resupply before starting.
Review Summary
Hikers consistently praise the otherworldly crater views and geological drama as worth the physical effort. The high altitude and loose terrain are the main difficulty factors, not technical skill. Most hikers report the return climb is significantly harder than the descent due to altitude, steepness, and fatigue. First-time high-altitude visitors should expect to move slowly and take frequent breaks.

Location

Frequently asked questions

How hard is the return climb at altitude?

Very hard. Most hikers find the 2-hour return significantly more difficult than the 1-hour descent. You're climbing 500 feet at 10,000 ft elevation on loose terrain with tired legs. Take breaks, hydrate constantly, and use trekking poles. Pace yourself deliberately.

Do I need to be an experienced hiker to do this trail?

No, but you need to be fit and comfortable with steep, loose terrain. This is stamina-based and altitude-dependent, not technical. Be honest about your fitness level and altitude tolerance.

Will altitude affect me?

Possibly. At 10,000 feet, some hikers experience mild altitude effects (shortness of breath, fatigue, headache). Spend time acclimatizing in lower elevations first if you just flew in. Hydration and a slow, deliberate pace help.

Is there water on the trail to refill?

No. Only the fountain at the visitor center at the trailhead. Carry 2+ liters of water minimum. There's no shade to rest in if you run out, so self-rescue is on you.

Can I do this hike with kids?

Only with experienced child hikers confident on steep, rocky terrain and able to handle 2–3 hours of physical effort at high altitude. Toddlers and average children will struggle. Consider easier park trails first, then return when they're older and fitter.

What wildlife hazards should I expect?

No bears in Hawaii. Nēnē (Hawaiian geese) are present but non-aggressive. Make noise on the trail. The real hazards are terrain, altitude, and dehydration—not wildlife.

What if I can't make an early start?

You can hike after 7am, but you'll face afternoon heat, fog, and crowds. Weather typically deteriorates in afternoon. If you can't arrive before 7am, consider scheduling for another day or exploring alternative lower-altitude trails in the park.

Sources

Information is compiled from official sources, verified traveler reviews, and editorial research. Learn how YourNPGuide works.

Last updated July 2026. Report an issue.