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A short scenic tour of the historic Iao Needle, waterfalls, and a lovely stream.

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Out and Back

1,029' 314 m


953' 291 m


90' 27 m


90' 27 m



Avg Grade (4°)


Max Grade (15°)

Dogs Unknown

Features River/Creek · Views · Waterfall


This popular spot offers a lot of varied things to see in a very compact geographic area, so be prepared to share it with others. The trail is pretty mild and do-able for most folks willing to climb a handful of stairs.

Need to Know

$5 fee for extremely limited parking. Come early (before 10am) or prepare to wait. Paved, but can become slippery in the rain/fog. Folks often wade in the stream, but swimming is not recommended- it is very rocky with swift water. Flash floods can occur here.


This short trail is tucked at the bottom of a lush green valley hemmed in with towering sharp ridges. The end of one of these ridges forms the Iao Needle, a striking pinnacle that gives its name to this area. The needle is said to represent Kanaloa, the Hawaiian God of the Ocean.

From the parking lot, head uphill past the restrooms. Soon you'll cross a bridge and be presented with some of the best views of Iao Needle. Wait your turn to take the obligatory photo. Continue along the trail, taking the right-hand fork towards the Iao Overlook. A series of mini-steps twist uphill to a small viewing shelter and some interpretive signs which explain the fascinating history of this valley. Retrace your (tiny) steps back to the trail split but instead of going back to the parking lot, keep right and go down the (normal sized) stairs into the jungle and towards the rushing stream.

The trail reaches stream level and cruises under thick tropical foliage. This pleasant area has rock outcrops if you'd like to linger. There are also places where you can gingerly pick your way down to the water itself. Back on the trail, follow the handrails and steps uphill for a short ways along the thrashing Kinihapai Stream. The valleys forming the headwaters of these streams are the second wettest in Maui! Rejoin the trail at the western end of the bridge and then head back to the parking lot to complete this worthwhile loop.

If you're curious: Another (extra credit) short path winds through a garden of native Hawaiian plants below the bridge on the way back to the parking lot.

History & Background

Ancient Hawaiians celebrated agricultural festivals here and the area still has special spiritual significance. The root vegetable taro was grown in this area to sustain the large population base on Maui. In 1790, an important battle was fought in this valley by Kamehameha in his efforts to unite all the Hawaiian Islands under his rule. The fight was so brutal it was named "the damming of the waters" because the profusion of dead bodies were said to have blocked the stream. Warriors used the peak as a lookout.


Shared By:

Megan W

Trail Ratings

  3.9 from 11 votes


  3.9 from 11 votes
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in Hawaii


48 Views Last Month
16,794 Since Apr 19, 2015
Easy/Intermediate Easy/Intermediate



Wading the Iao Stream
Apr 17, 2015 near Wailuku, HI
Tourists on the bridge.
Apr 22, 2015 near Wailuku, HI
Jungly understory.
Apr 22, 2015 near Wailuku, HI
Nice palm seat on the Streamside Trail
Apr 17, 2015 near Wailuku, HI
Nice waterfall across the valley
Apr 17, 2015 near Wailuku, HI
The Iao Needle itself.
Apr 17, 2015 near Wailuku, HI



Current Trail Conditions

Add Your Check-In


Feb 12, 2022
Casey Weaver
Jan 21, 2022
Meg Heyman
ETA so
Jan 18, 2022
Thomas Purtscher
Trail goes way deeper than marked, and kind of gets sketchy, but is a nice trail along the river 1mi — 0h 30m
Apr 12, 2021
Claudia Guzman
short hike up to a valley lookout. there is also a short walk to a garden. I visited expecting more of to learn more about the local history, whi…
Feb 23, 2021
Gerald Murphy
Feb 16, 2021
Thomas Horn
Dec 23, 2019
Jamie Marshall
Sep 13, 2019
Norma Madrigal

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