Planning your dream trip to the Big Island? While the beaches are beautiful and the volcanoes are awe-inspiring from afar, let me tell you – the real magic happens when you step onto its trails. If you’re looking to truly connect with the island’s incredible spirit and witness its staggering diversity up close, hiking is non-negotiable!
I’ve walked these paths, from easy jungle strolls perfect for the family to challenging climbs across ancient lava flows, and each one offers a unique perspective. Whether you’re a seasoned trekker or just looking for a scenic walk, the Big Island has a trail that will transform your vacation from great to absolutely unforgettable. Let’s explore where your feet can take you!
1. Hawaii Volcanoes National Park: Walking Through Fire and Ferns
No trip to the Big Island is complete without exploring Hawaii Volcanoes National Park, a place where the raw power of the earth is on full display. The park offers some truly unique hiking experiences.
Kīlauea Iki Trail: Journey into a Crater
This is often hailed as one of the best day hikes on the island, and for good reason! It’s an adventure that takes you from a lush rainforest rim down onto the floor of a solidified, yet still steaming, lava lake.
- The Experience: Starting high on the crater rim, you descend through vibrant green ferns and ʻōhiʻa trees. The air is cool and smells of damp earth and blossoms. Then, the landscape dramatically shifts as you step out onto the vast, cracked floor of the Kīlauea Iki crater. It feels otherworldly walking across the dark expanse, seeing steam vents puffing nearby – a tangible reminder of the heat still simmering below. It’s a fascinating juxtaposition of environments. Even as inexperienced hikers with young kids, we found this trail manageable and absolutely awe-inspiring. You can literally feel the warmth radiating from the ground in places!
- Hike Details:
- Difficulty: Moderate (due to the steep descent/ascent and rocky crater floor)
- Length: Approx. 4 miles (6.4 km) loop
- Location: Hawaii Volcanoes National Park
- Tip: Wear sturdy closed-toe shoes! The lava rock is uneven and sharp. Bring water and sun protection, as the crater floor offers no shade.
Nāhuku (Thurston Lava Tube) & Kīlauea Craters Trail
Combine a walk through craters with the unique experience of exploring a lava tube!
- The Experience: The Kīlauea Craters Trail offers a longer journey through varied volcanic landscapes. A highlight is detouring to the Nāhuku (Thurston Lava Tube). Stepping into this massive cave, formed by flowing lava centuries ago, feels like entering another world. It’s damp, cool, and eerily quiet inside. The surrounding trail winds through lush jungle and past volcanic craters.
- Hike Details (Combined Trail Loop):
- Difficulty: Moderate
- Length: Approx. 8.0 miles loop (shorter options available focusing just on the lava tube)
- Location: Hawaii Volcanoes National Park
- Tip: A flashlight or headlamp can be useful inside the lava tube, although it is lit during certain hours. Check park conditions before you go.
Puʻu Loa Petroglyphs Trail: Whispers from the Past
Walk back in time on this easy, culturally significant trail.
- The Experience: This trail leads you across an ancient lava field to one of the largest known concentrations of petroglyphs (rock carvings) in Hawaii. A boardwalk allows for close-up views of these fascinating images carved into the rock centuries ago by Native Hawaiians. It’s a quiet, reflective walk that offers insight into the island’s rich history.
- Hike Details:
- Difficulty: Easy
- Length: Approx. 1.2 miles round trip
- Location: Hawaii Volcanoes National Park, along Chain of Craters Road
- Tip: Stay on the boardwalk to protect the fragile petroglyphs. The sun can be intense here, so bring water and protection.
Halapē Trail (Puʻu Loa via Puna Coast Trail): A Coastal Challenge
For the truly adventurous backpacker seeking solitude and stunning coastal scenery.
- The Experience: This is a serious undertaking, a challenging trek across rugged lava fields leading to the remote coastal area of Halapē. Your reward? A secluded beach, swaying palm trees, and potentially some freshwater pools (check conditions). It’s tough, exposed, and requires careful planning.
- Hike Details:
- Difficulty: Difficult
- Length: Approx. 11.3 miles one-way
- Location: Starts near the Puʻu Loa Petroglyphs Trailhead, Hawaii Volcanoes National Park
- Tip: This is best as an overnight backpacking trip (permits required!). Carry ample water (or a reliable filter), sun protection, and be prepared for hot, windy conditions. Navigation skills are essential.
2. The Lush East Side: Waterfalls and Coastal Charms
Transitioning from the volcanic landscapes, the east side around Hilo and the Hāmākua Coast offers verdant rainforests and dramatic waterfalls.
‘Akaka Falls State Park: Jungle Majesty
A short, easy walk yields incredible rewards in this stunning state park.
- The Experience: This is less of a hike and more of a delightful stroll on a paved path, but the payoff is huge! You wander through a fairytale jungle filled with giant ferns, bamboo groves, and tropical flowers. The air is thick with humidity and the scent of blossoms. The loop leads you first to Kahūnā Falls and then to the star: the breathtaking ʻAkaka Falls, plunging 442 feet into the gorge below. It’s incredibly picturesque and perfect for families or those wanting maximum beauty with minimum effort.
- Hike Details:
- Difficulty: Easy
- Length: 0.4 miles loop
- Location: ʻAkaka Falls State Park, north of Hilo
- Tip: There’s a small entrance fee per vehicle or per person. Go early to avoid crowds.
Rainbow Falls (Waiānuenue) & Boiling Pots Lookout
See the power of the Wailuku River at these easily accessible spots.
- The Experience: Rainbow Falls is known for the rainbows often visible in its mist on sunny mornings. It’s a very short walk from the parking lot to the main viewpoint. Nearby, the Boiling Pots lookout offers views of turbulent rapids cascading through sculpted lava rock formations, appearing to ‘boil’ during heavy flow. You can add a short, moderate trail hike here too. Don’t miss the massive, ancient banyan tree near Rainbow Falls!
- Hike Details (Rainbow Falls viewing + Boiling Pots Trail):
- Difficulty: Easy (Rainbow Falls viewing) to Moderate (Waiʻale Falls Trail/Boiling Pots)
- Length: 0.1-0.2 miles (Rainbow Falls) + 0.6 miles (Waiʻale Falls Trail) + 0.3 miles (Boiling Pots Lookout)
- Location: Hilo
- Tip: Visit Rainbow Falls earlier in the morning for the best chance of seeing rainbows.
Onomea Bay Trail: A Scenic Gem
Discover a hidden cove along a beautiful coastal trail.
- The Experience: Tucked away along the Old Mamalahoa highway scenic drive, this short trail descends gently towards the ocean, opening up to stunning views of Onomea Bay. The turquoise water contrasts beautifully with the black lava rocks and lush vegetation. It’s a peaceful spot, perfect for soaking in the coastal beauty.
- Hike Details:
- Difficulty: Easy
- Length: Approx. 1 mile round trip
- Location: Along the Old Mamalahoa highway, near the Hawaii Tropical Botanical Garden (which also offers lovely walks, though with an entrance fee).
Waipiʻo Valley: Descent into Paradise (Check Current Access)
Note: Access to Waipiʻo Valley, especially the road down, is often restricted or requires specific conditions due to safety concerns. Always check the latest official advisories before planning a visit or hike.
- The Experience: Known as the “Valley of the Kings,” Waipiʻo is steeped in history and breathtaking beauty. Hiking down the incredibly steep access road (if permitted) leads you into a lush valley floor with taro fields, wild horses, a black sand beach, and towering cliffs laced with waterfalls. It feels sacred and remote. The hike back up is notoriously strenuous.
- Hike Details (if accessible):
- Difficulty: Moderate (descent/valley floor) to Difficult (ascent is extremely steep)
- Length: Approx. 4.7 miles round trip (including some valley floor walking)
- Location: Hāmākua Coast
- Tip: Respect the residents and the sacred nature of the valley. Be aware of river crossings which can become dangerous after rain. Due to the steepness, only 4WD vehicles are typically allowed on the road (if permitted at all); hiking down and especially up requires serious fitness. Consider valley tours if hiking access is difficult or restricted.
3. Southern Wonders: Green Sands and Black Sands
The southern Kaʻū district boasts some unique geological wonders accessible via memorable hikes.
Papakōlea Green Sand Beach Hike: An Olivine Treasure
One of only a few green sand beaches in the world!
- The Experience: The destination is the star here: a beach nestled in a collapsed cinder cone, its sands tinted green by olivine crystals eroded from the volcanic rock. The hike itself is across exposed, often windy, coastal terrain. While the trail is relatively flat, the heat, wind, and lack of shade make it feel tougher than the mileage suggests. Reaching the cove and seeing the unique green sand is a remarkable payoff.
- Hike Details:
- Difficulty: Easy trail, Moderate conditions (due to sun/wind exposure)
- Length: Approx. 5.3 – 5.6 miles round trip
- Location: Near South Point, Kaʻū District
- Tip: Go early to avoid the worst heat. Bring plenty of water, sunscreen, and a hat. Swimming can be dangerous due to strong currents. Resist the urge to take paid “shuttles” (often illegal and damaging to the land) – the hike is part of the experience. Do not drive a rental car here unless it’s a true 4WD and your rental agreement allows it (most don’t).
Punaluʻu Black Sand Beach: Turtle Haven
While famous as a drive-to beach, trails nearby offer exploration opportunities.
- The Experience: Punaluʻu is renowned for its jet-black sand (tiny fragments of lava) and the frequent presence of Hawaiian Green Sea Turtles (Honu) basking on the shore. While you can admire the turtles right near the parking area, exploring trails around the beach offers more perspective on the unique coastal environment formed by lava flows meeting the ocean.
- Hike Details (exploring the area):
- Difficulty: Easy to Moderate (depending on how far you explore)
- Length: Variable, can be up to ~5.8 miles exploring coastal trails
- Location: Kaʻū District
- Tip: Always keep a respectful distance from the Honu (it’s the law!). Never touch or disturb them. The black sand gets very hot, wear appropriate footwear.
South Point (Ka Lae): Southernmost Steps
A short walk to a significant landmark.
- The Experience: Hike to the southernmost point of the United States! It’s a windswept, dramatic coastline with powerful ocean currents and historical significance (believed to be where Polynesians first landed). See the cliffs where locals sometimes jump (not recommended for visitors!) and feel the raw energy of the place.
- Hike Details:
- Difficulty: Easy
- Length: Approx. 0.5 miles round trip
- Location: Kaʻū District
- Tip: Hold onto your hat! It’s almost always incredibly windy here.
Kaʻū Desert Trailhead: Footprints in Ash
Explore a unique landscape within Hawaii Volcanoes National Park’s extension.
- The Experience: This trail traverses a surprisingly arid area affected by volcanic ash and acid rain from Kīlauea’s eruptions. It feels starkly different from the rainforest sections of the park. A key point of interest involves searching for fossilized human footprints preserved in the ash layers from centuries past (follow park guidance to locate and protect these).
- Hike Details:
- Difficulty: Easy
- Length: Approx. 3.8 miles round trip (to footprint area)
- Location: Hawaii Volcanoes National Park (Kaʻū Desert Trailhead off Highway 11)
- Tip: It’s a desert environment – very exposed and hot. Carry lots of water, wear sun protection, and start early.
4. Northern Kohala Coast: Valleys and Vistas
The northern tip of the island offers dramatic cliffs and beautiful valleys.
Pololū Valley Trail: Coastal Drama
A short but steep hike down to a stunning black sand beach and valley mouth.
- The Experience: Starting from a lookout point with jaw-dropping views of the rugged coastline and sea cliffs, this trail zigzags steeply down to the floor of Pololū Valley. The beach here is beautiful, framed by the valley walls and pounded by surf (swimming usually unsafe). You can wander a bit into the valley floor amongst the ironwood trees. The hike back up will get your heart pumping!
- Hike Details:
- Difficulty: Moderate (steep descent/ascent)
- Length: Approx. 0.9 miles round trip (to the beach)
- Location: End of Highway 270, North Kohala
- Tip: Parking is very limited at the lookout/trailhead; be prepared to park further away and walk, or go very early/late. Wear sturdy shoes for the descent. You can extend the hike towards ʻĀwini Lookout for a longer, more challenging trek (approx. 3.9 miles total).
5. High Altitude Giants: Mauna Kea & Mauna Loa (Expert Level)
For the truly dedicated and prepared hiker, tackling Hawaii’s massive shield volcanoes offers an unparalleled experience. These are serious high-altitude undertakings.
Mauna Kea Summit via Humu’ula Trail: Top of the Pacific
Hike to the highest point in Hawaii and the entire Pacific Rim.
- The Experience: Starting near the Visitor Information Station (already at high altitude), this strenuous trail climbs through unique alpine desert landscapes to the summit of Mauna Kea. The air is thin, the views are immense (often above the clouds), and the cultural significance is profound. Reaching the summit, home to world-class astronomical observatories, feels like standing on top of the world.
- Hike Details:
- Difficulty: Hard (due to altitude, steepness, and length)
- Length: Approx. 12 miles round trip
- Location: Access via Saddle Road, trail starts near Visitor Information Station (VIS) at ~9,200 ft
- Tip: Acclimatize properly to the altitude (spend time at the VIS before starting). This requires serious fitness, preparation (layers, sun protection, LOTS of water), and awareness of altitude sickness symptoms. Check conditions; weather can change rapidly. Permits may be required.
Mauna Loa Summit Trail: The World’s Largest Volcano
An arduous journey to the summit caldera of the largest active volcano on Earth.
- The Experience: This multi-day backpacking trip (or extremely long day hike for the ultra-fit) ascends Mauna Loa’s vast, barren slopes to its summit caldera, Mokuʻāweoweo. It’s a demanding trek over rough lava, often requiring navigation skills, and exposes you to high altitude and potentially harsh weather. Reaching the immense caldera is an achievement for experienced mountaineers.
- Hike Details (Observatory Trail):
- Difficulty: Hard/Expert
- Length: Approx. 13 miles round trip
- Location: Trailhead accessible from Mauna Loa Observatory Road (via Saddle Road)
- Tip: Requires permits for overnight stays (cabins available). High altitude acclimatization is crucial. Carry map/GPS, extensive water, layers for all weather, and be prepared for self-sufficiency. This is a wilderness experience. Drive carefully on the access road.
Essential Tips for Big Island Hiking
No matter which trail calls to you, preparation is key for a safe and enjoyable hike:
- Water, Water, Water: The Hawaiian sun is strong, and many trails are exposed. Carry more water than you think you’ll need.
- Sun Protection: Sunscreen, hats, and sunglasses are essential, even on cloudy days.
- Sturdy Footwear: Trails can range from paved paths to sharp lava rock and muddy slopes. Closed-toe hiking shoes or boots are highly recommended for most trails.
- Check Conditions: Weather can change rapidly, especially at higher elevations or in valleys. Check forecasts and park/trail status updates before you go. Flash flooding can occur.
- Respect the ʻĀina (Land): Stay on marked trails, pack out everything you pack in (Leave No Trace), do not disturb wildlife (like sea turtles), and respect sacred sites (do not touch or move rocks, especially at petroglyph sites or heiau).
- Start Early: Beat the heat and the crowds, especially for popular trails or those with limited parking.
- Navigation: While many popular trails are well-marked, carrying a map or using a GPS app can be helpful, especially on longer or more remote hikes.
- Snacks: Keep your energy levels up with some trail snacks.
- Altitude Awareness: For Mauna Kea and Mauna Loa, understand the risks of altitude sickness and acclimatize properly.
The Big Island offers a lifetime of hiking adventures. Each trail tells a story of creation, history, and vibrant life. From the dramatic volcanic landscapes to the serene coastal paths and lush jungle walks, you’re sure to find trails that capture your heart and leave you with memories as vivid as a Hawaiian sunset. Happy hiking!
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