Waʻahila Ridge Trail
Photo Credit: Kelvin Lu
Waahila Ridge

**IMPORTANT PARK NOTICES**

Monitor weather reports before your park visit!

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[MAUI] UPDATE 5/2/25 - Polipoli Spring State Recreation Area has REOPENED. 

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[OʻAHU] - UPDATE 5/1/25: Mauna ʻAla, Royal Mausoleum State Monument, has REOPENED.

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[OʻAHU]—UPDATE 4/25/25: Diamond head State Monument: Invitation For Bids (IFB) For Mobile Food Concession Contract at Diamond Head State Monument, Oʻahu is AVAILABLE TODAY – The IFB, including required forms for bidding, qualifications, specifications and contract, may be obtained from the DSP website: https://dlnr.hawaii.gov/dsp/announcements/, or by emailing DLNR, Division of State Parks Property Manager; Ms. E. Keiki Kipapa at earleen.k.kipapa@hawaii.gov Monday through Friday, 8:00 AM to 4:00 PM Hawaii Standard Time (HST) except Federal and State Holidays.

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[MAUI] - UPDATE 4/17/25: Puaʻa kaʻa Wayside and Restrooms will be CLOSED for renovations April 21 thru May 12.

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[MOLOKA’I] - UPDATE 3/24/25: Pala’au State Park Pavilion: Due to demolition and renovation work, the pavilion will be closed from March 25 to May 31.

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[KAUAʻI] - UPDATE 3/21/25: Pā‘ula‘ula State Historic Site - Due to construction improvements, the park closure will begin starting March 24 until further notice.

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[OʻAHU] UPDATED 3/18/25 – Diamond Head State Monument (DHSM): Partial Park Closures Hours with operating hours from 6:00 AM to 2:00 PM will occur from April 21 onwards Monday through Friday, (except holidays).  Normal Park Hours from 6:00 AM to 6:00 PM will resume on Weekends and Holidays. During Partial Park Closures Hours from 6:00 AM to 2:00 PM, the last reservation time slot for Parking and Entry and Entry Only will be 12:00 p.m. If you reserved at 12:00 p.m., you must enter the Park no later than 12:30 p.m. or you will be denied entry. The project began January 6, 2025, and will run until July 25, 2025, upon completion of the rock fall mitigation construction project at the Kahala Tunnel. Please check back for updates.

Waʻahila Ridge Trail

Trail Length 2.4 miles
Activity Pedestrian
Difficulty Moderate to Difficult
Terrain Dry, Mountainous, Partly Native Forest
Elevation Gain 500 ft
Park Name Waʻahila Ridge State Recreation Area

Description

This ridge hike originates in Wa‘ahila Ridge State Recreation Area, and offers great views and viewing of native forest and birdlife.

Route

The trail begins at the back of Wa‘ahila Ridge State Recreation Area within ironwood and guava trees. It traverses alternately between open ridge and forest as it gradually ascends up the ridge between Manoa and Palolo Valleys. It offers spectacular views of Manoa Valley, Palolo Valley, Honolulu and the Ko‘olau Range. Native Hawaiian plants are common along the upper portions of this trail, including koa and ‘ohia lehua. This trail can also be a good place to observe the native birds amakihi and apapane. This trail ends at an intersection with Kolowalu Trail. Do not go up to the summit beyond the Kolowalu/Wa‘ahila junction – it is a Restricted Watershed Area. You may continue down Kolowalu Trail, which descends steeply down into the back of Manoa Valley.

Directions

From Waialae Avenue, proceed up St. Louis Drive. Wind up the road, turning right on Peter St. near the top. At the end of Peter (at the cul-de-sac), turn left on Ruth St., continuing into Wa‘ahila Ridge State Recreation Area. Park in the provided parking lot and follow trailhead signs.

Additional Info

  • Mountain biking is not allowed on this trail.
  • Stay on the trail.
  • Keep dogs on leash.
  • Pack out at least what you pack in.
  • No open fires.