Wailua River: A Self-Guided Adventure

Approximate Time: 3.5–5 hours

Welcome to Wailua River — the only navigable river in all of Hawaii and once the sacred home of
ancient Hawaiian royalty. Today, this tranquil waterway is a paradise for adventurers. Winding past waterfalls, lava
rock grottos, and lush jungle scenery, the Wailua is ideal for stand-up paddleboarding and kayaking. With high-quality
rentals from Kauai SUP & Kayak, you’ll be gliding in style.

We recommend getting an early start so you have plenty of time to explore the river and enjoy the beautiful
destinations along its banks.

The Launch

After parking, feel free to use the public restroom. If you plan to hike to Secret Falls, bring
sturdy hiking shoes. We suggest unloading your kayak or paddleboard near the water’s edge before parking your
vehicle. Please do not drag equipment on concrete — it can damage it.

Important: Avoid using the boat ramp — it’s slippery and jagged. Instead, enter the water from the
sandy area just to the right (west) of the ramp for a safer, easier launch.

• Avoid pushing off with your paddles
• Do not drag equipment over concrete or gravel
• Place boards only on grass or water
• Never rest boards on fins

We appreciate your care and consideration!

The Paddle

When heading downstream, stay close to the north riverbank (same side as the boat ramp). This allows
space for passing boats. When stopping to explore, be sure to pull your board or kayak fully onto shore, away from
rising tides or traffic.

The River Fork

• North Fork (right): Leads to the Secret Falls trailhead – the most popular adventure.
• South Fork (left): Takes you to the Fern Grotto and Swimming Hole.

If you have the stamina, you can visit all three destinations. Just remember that the return paddle will be more
challenging due to headwinds, so conserve energy!

Secret Falls Hike (Uluwehi Falls)

The 100-foot Uluwehi Falls is the crown jewel of the Wailua River. Park your paddleboard or kayak
well off the shoreline. Then, begin the flat, scenic one-mile hike. If in doubt about the route, follow one of the
many guided tour groups headed to the falls.

The trail has recently been upgraded with a boardwalk, making the walk cleaner and easier. The hike takes about 30
minutes. Once at the falls, enjoy a refreshing swim or a picnic — just remember to allow time and energy for your
return paddle.

Fern Grotto

Heading up the south fork brings you to the peaceful and lesser-traveled Fern
Grotto — a lush lava rock cave covered in ferns. This area sees fewer tour groups, making for a quiet
paddle.

Note: The cave itself is closed to the public and there’s limited parking for paddlers. If you decide to visit, park
at the "kayak parking" sign and tie off using exposed tree roots. A short paved walkway takes you to the grotto.
Boat tours also frequent this area, so access may be tricky — we typically don’t recommend this stop.

The Swimming Hole

About 10 minutes upstream from Fern Grotto lies the secluded Swimming Hole. Paddle through a low
jungle canopy and emerge into a sunlit paradise where you can swim, float, or relax on your board.

You can even climb a 15-foot cliff and safely jump into the water — but check for shallow rocks and other
swimmers before you leap!

Return Paddle

The return paddle will likely be against the wind, making it the most challenging part of your journey. Conserve your
energy. To make the trip easier, consider kneeling or sitting on your board. Always stay on the north side
of the river on your way back.

The Finish Line

Once back at the boat ramp, rinse off your board or kayak using river water and your hands to remove mud or debris.
The ramp can be slippery, so step with care.

After you’ve secured your gear to your vehicle, return to our shop — we’ll be there to help unload and say goodbye.
Note: Late returns may be subject to a fee.

Thank you for exploring the Wailua River with Kauai SUP & Kayak — Aloha!