Trail

Kīlauea Iki Trail

Trail
Volcanic crater with a large cinder cone on the left-hand side and a larger mountain beyond.

This 3.3-mile loop descends 400 feet through native rainforest into an active volcanic crater, then crosses the hardened lava lake floor from the 1959 eruption. Difficulty verdict: moderate-to-challenging with a punishing ascent. The payoff is unmatched—you'll stand inside the crater looking up at walls 400 feet high, with steam vents and the Puʻupuaʻi cinder cone framing the view.

Quick facts

Distance Miles
3.3
Route Type
Loop
Difficulty Level
Moderate to challenging
Elevation Gain Feet
400

Trail profile

Distance Miles
3.3
Route Type
Loop
Difficulty Level
Moderate to challenging
Elevation Gain Feet
400
Estimated Time
2 to 3 hours for the main overlook loop; 3–5 hours if starting from Visitor Center or Devastation Trailhead
Trail Surface
Steep, rocky lava terrain with sections of hardened lava lake floor. Uneven, sharp-edged basalt.
Trail Features
  • Active volcanic crater
  • Hardened 1959 lava lake floor
  • Rainforest descent section
  • Crater rim views
  • Steam vents and fumaroles
  • Puʻupuaʻi cinder cone
  • Lava landscape formations
Trail Highlights
Walk across the floor of an active volcanic crater on hardened lava from the 1959 eruption. Experience 360-degree crater walls, visible steam vents, and the geological drama of an active volcanic system.

Trailhead & access

Trailhead Location
Kīlauea Illi Overlook (primary, extremely limited parking). Also accessible from Devastation Trailhead (6.0 miles round-trip, better crowds and parking), Kīlauea Visitor Center (5.3 miles round-trip), or Puʻupuaʻi Parking Area.
Parking Lot Size
Extremely limited at Kīlauea Illi Overlook. Larger capacity at Devastation Trailhead and Kīlauea Visitor Center.
Parking Fill Time
Full by mid-morning on weekends and peak season; arrive before 6:30 AM or use alternative trailheads.
Shuttle Required
0
Shuttle Details
Not required. If Overlook parking is full, park at Kīlauea Visitor Center (free, spacious lot) and add 2 miles via Crater Rim Trail. Devastation Trailhead offers similar distance and fewer crowds.

Permits & conditions

Permit Details
No permits required.
Fees
$30 entrance fee (private vehicle, valid 7 days); covered by America the Beautiful annual pass ($80). No additional activity fees.
Trail Status
Open
Seasonal Closures
Rare; park is open 24/7, year-round. Closures possible due to volcanic activity; check nps.gov/havo before visiting.

Facilities & rules

Restrooms At Trailhead
0
Water Sources
None on trail. Carry all water. Minimum 2 liters; 3+ liters recommended in summer.
Accessibility
Steep and rocky with 400-foot descent and ascent. Not wheelchair or stroller accessible. Requires moderate-to-high fitness and sure footing. Unsuitable for those with knee instability or significant mobility limitations.

Safety & strategy

Hazards
  • Steep 400-foot descent and ascent
  • Razor-sharp lava rock
  • Uneven and unstable terrain
  • Deep earth cracks in lava field
  • Full sun exposure on crater floor
  • Heat stress on exposed lava
  • Wind exposure
  • Slippery when wet
Hazard Details
Hiking on lava flow fields is inherently hazardous. Expect deep cracks, uneven surfaces, and razor-sharp basalt edges. The 400-foot ascent is the primary physical danger—steep, rocky, minimal rest points. Midday crater floor temperatures exceed 85°F with zero shade. Worn lava grips poorly when wet. Do not hike in dense fog when visibility is compromised.
Cell Service
Spotty; reliable near Kīlauea Visitor Center, unreliable on crater floor. Always inform someone of your hiking plans before departure.
Crowd Level
Moderate to high during peak hours; manageable if you arrive early (before 7 AM).
Peak Crowd Times
Weekends and holidays; 7 AM–4 PM daily in summer. Lightest traffic: weekdays before 7 AM or after 4 PM.
Best Season
May through September (drier weather, minimal afternoon rain). Year-round accessible.
Best Time To Visit
Year-round access. Best May–September when weather is drier and afternoon rain less frequent. Start by 6:30 AM to beat crowds and avoid peak midday heat on the exposed crater floor. Afternoon storms common November–March; plan accordingly.
Tips Advice
  • Bring 2+ liters of water minimum; crater floor is full-sun with zero shade.
  • Trekking poles essential for the 400-foot ascent—your knees will demand them.
  • Wear sunscreen and a hat; lava stone reflects UV and amplifies burns.
  • Arrive before 6:30 AM or park at Devastation Trailhead or Visitor Center instead.
  • Wear sturdy, closed-toe hiking boots with aggressive tread—lava is razor-sharp and unforgiving.
  • Pack electrolyte supplements; the ascent drains sodium fast.
  • Watch for deep cracks in the lava field; step careless and you'll catch a boot heel.

More details

Park Area
Kīlauea summit area
Trail Markers
Well-worn and clearly marked. Trail is established and easy to follow despite volcanic terrain.
Dogs Allowed
No; pets not permitted on trails.
Biking Allowed
No; hiking-only trail.
Shade Level
Rainforest canopy provides 20% shade on descent. Crater floor is full sun. Average 40% shade overall.
Emergency Contacts
Kīlauea Visitor Center: +1-808-985-6000. Park Rangers patrol Crater Rim Drive. In emergencies, call 911 (cell service dependent).
Map Recommended
1
Snow Dates
Not applicable; Hawaiʻi Volcanoes at 4,000 feet elevation in the tropics. No snow.
Mud Season
Not applicable; porous lava drains rapidly. Trails dry quickly after rain.
Fall Colors Peak
Not applicable; Hawaii has no fall foliage season.
Bug Season
Mosquitoes and flies present year-round; worse November–March during wet season. Use insect repellent.
Insider Tips
  • The ascent is harder than the descent—mentally prepare for the climb out.
  • If Overlook lot is full, don't waste time circling; head to Devastation Trailhead (better parking, fewer crowds, equally scenic).
  • The false summit at Mile 2 will tempt you; actual rim is 100 yards beyond the false flat.
  • The view from the crater floor looking back at Puʻupuaʻi cinder cone is the money shot—save photo energy for Mile 1.5.
  • Bring extra salty snacks; the ascent drains electrolytes fast.
  • Lava cracks can catch boot heels; watch foot placement on uneven sections.
Recent Updates
Check nps.gov/havo for current trail conditions and any volcanic activity alerts.
Family Friendly Notes
Suitable for children 8+ with strong fitness and prior hiking experience. 10+ is safer. The 400-foot descent requires careful foot placement; hand-holding mandatory on steep sections. Younger children may struggle with the ascent. Plan 3–4 hours with kids, not 2. Extra water, snacks, and frequent breaks essential.
Nearby Facilities
Kīlauea Visitor Center (restrooms, water, ranger info, 2–4 miles depending on trailhead). Parking areas and pit toilets at Devastation Trailhead and Puʻupuaʻi. No food or supplies on trail.
Review Summary
Hikers describe this as one of the park's crown jewels—the volcanic geology is unmatched and the crater experience unforgettable. Most emphasize the grueling 400-foot ascent as the hardest part. Reviews consistently praise the rainforest descent but warn that water and trekking poles are non-negotiable for the return climb.

Location

Frequently asked questions

I'm not super fit—can I still do this hike?

The descent is doable for most fitness levels, but the 400-foot ascent is no joke. If you can climb 20 flights of stairs without stopping, you can summit. Start early to avoid heat buildup, use trekking poles, and take breaks. Many hikers of moderate fitness report struggling with the ascent—this is normal. Go slow, hydrate, and embrace the burn.

Is it dangerous? Are there hazards I should worry about?

Yes, it's hazardous. The razor-sharp lava can cut bare skin, deep earth cracks are present, and the terrain is uneven. Wear boots, long pants if possible, and watch your footing. The real danger is dehydration and heat exhaustion on the exposed crater floor. Bring adequate water and start early. If you're comfortable with Class 2 scrambling and move with balance, you'll manage.

What if I get injured halfway through? Can I be rescued?

Cell service is spotty on the crater floor. Always inform a ranger or friend of your hiking plans before you go. The trail is heavily traveled, so odds are another hiker will assist or radio for help. In a true emergency, stay put and wait. This is why starting early and finishing before dark is critical.

Are there snakes, bears, or big predators I need to worry about?

No bears or snakes. You may encounter native Hawaiian birds and feral cats. Insects (mosquitoes, flies, wasps) are the only real wildlife hazard. Use insect repellent and don't mess with nests. Make noise as you hike to avoid surprising animals.

Can I bring my kids on this hike?

Kids 8+ with prior hiking experience can manage; 10+ is safer. The 400-foot descent and ascent require good balance and confidence on uneven ground. Younger kids will struggle with the climb and may need carrying assistance. Plan 3–4 hours with breaks, snacks, and extra water.

What's the single biggest mistake hikers make on this trail?

Underestimating the ascent. Hikers blow through the descent feeling strong, then hit the climb and run out of water and energy. The return is 90% of the challenge. Pace yourself down, save strength for up, and carry 3 liters minimum—not 2.

Footprints Area

Ancient footprints frozen in volcanic ash. Short but serious: steep, exposed, and unforgiving.

Devastation Trail

1-mile paved cinder views with zero elevation. Easy for all ages, brutal sun exposure. Nēnē geese—respect distance.

Halemaʻumaʻu Trail

Drop 425ft into the crater. Uneven lava, full sun, panoramic payoff. Poles and water mandatory.

Keanakākoʻi

Crater views and volcanic history without the technical climb. Bring water and sun armor—exposure is real.

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Sources

Editorial review: YourNPGuide Editorial Team. Information is compiled from official sources, verified traveler reviews, and editorial research; no firsthand visit is implied unless explicitly documented. Learn how YourNPGuide works.

Last updated July 2026. Report an issue.