Of all the incredible hikes found among the Hawai'ian islands, few compare to the Kalalau Trail, an iconic route that surfaces time and time again in rankings of the world's best outdoor adventures. Tucked along Kaua'i's Na Pali Coast, Kalalau is a trek of breathtaking beauty, condensing some of the state's most stunning vistas into 20 winding miles of trail.

Perhaps the main draw of Kalalau is the chance to see the renowned Nā Pali Coast, an area of Kaua'i so remote that it can only be accessed by water, foot, and helicopter. Extending from the end of Hawaii Route 560, Kalalau is the primary throughway for outdoor enthusiasts wanting to experience this coastline without the constraints of a boat schedule or aerial tour itinerary. As a hiker, it's easier to absorb the epic landscape, formed five million years ago when a deluge of water poured across the island's northwest side, cutting deep valleys into the bluffs. Visitors can still see waterfalls careening down the cliff faces in certain areas, descending into the park's secluded dells.

If you're interested in taking on this challenging hike, make sure you arrive prepared. Only the most conditioned adventurers can complete the 20-mile trek in a single day. Even if you could, I believe it's worth extending your time on the trail to appreciate the surrounding scenery. Coastal Kaua'i is nothing if not changeable, and patient visitors will be rewarded with an array of moods — from thick fog to sparkling sunshine — all of which accentuate different aspects of the landscape.

There are several legs of this famous trail. The first connects Ke'e Beach to Hanakapiai stream. To delve deeper into the park, visitors will need a camping permit, regardless of whether they intend to complete the entire route in one day or break their journey into smaller sections. Failure to obtain this permit constitutes a petty misdemeanor. Though it might seem harsh, this careful regulation helps maintain the fragile ecosystem of Ha'ena, ensuring Kalalau may stay open for future travelers.

After reaching Hanakapiai, hikers trek to Hanakoa Valley, nestled about six miles from the trailhead. This verdant enclave boasts a gorgeous waterfall, a stream, and dazzling views. From the valley, visitors forge on to Kalalau Valley and, eventually, Kalalau Beach.

At Kalalau Beach, hikers are free to camp for up to five consecutive nights. If you have the supplies and the time, I highly recommend doing so. Water sources dot the winding trail, so you'll have opportunities to refill your bottles. Locate these in advance so you'll always stay hydrated!

If you have the skill and the ability, Kalalau Trail is an iconic hike that belongs on your bucket list. With its soaring cliffs, lush valleys, and the endless, glittering ocean, it's easy to see why this route is synonymous with the legendary beauty of coastal Kaua'i.