Skyline Road

Trail in Kahikinui Forest Reserve (Papa'anui Tract)


  • Directions

    Geolocation is not allowed
  • Distance

    5.43 miles


This dirt and gravel road forks off of the Mauna Kea Access Road (R-1) and goes uphill passing through open māmane (Sophora chrysophylla), naio (Myoporum sandwicense), and ʻiliahi (Santalum paniculatum) native high-elevation dry forest. Native forest birds such as ʻamakihi (Hemignathus virens) and ʻelepaio (Chasiempis sandwichensis) are often sighted in the vicinity of the road. The route also traverses critical habitat of the endangered palila (Loxioides bailleui), a Hawaiian finch found only on the upper slopes of Mauna Kea. The road leads to the lower reaches of high-elevation alpine desert, with ʻāhinahina (Mauna Kea silverswords, Argyroxiphium sandwicense subsp. sandwicense) occasionally blooming.

Caution: the road takes drivers to over 10,000 foot elevation. Be aware of altitude sickness symptoms.

Allowed Activities
Atv Riding
Horseback Riding
Motorcycle Riding
Rifle Hunting
Wildlife Watching
Allowed Access
Motor Vehicles

Additional Information

Dog Owners

Hunting may be in progress on or near this hiking trail. Hunting dogs may be off-leash while engaged in the hunt. Hikers must keep their dogs leashed at all times and remove dog waste while on this trail.


  • ATV/Motorized Vehicle
  • Equestrian
  • 4-wheel drive
  • Hiking
  • Hunting
  • Motorcycle
  • Sightseeing
  • Wildlife Viewing

Special Conditions

Wear bright colored clothing as the road passes through areas for year-round hunting for game mammals and seasonal shooting of game birds. Occasionally, the area may close due to aerial control of invasive mammals. Further information may be obtained by contacting the Division of Forestry and Wildlife at (808) 974-4221. Do not use any trail or access road that is not delineated by name and color and that may also be displayed on these maps. The marked features are managed for public recreational use. Other trails or roads that branch off from the public features may be on private property, and are not managed for any public recreational use. Access is subject to adjacent landowner approval, and if used without authorization, you will be trespassing and possibly putting yourself at risk. Downloadable resources are provided below

Simple Trail Tips

  1. Stay on the trail 
  2. Check the weather 
  3. Watch the time 
  4. Avoid undue risk 
  5. Read all posted signs 
  6. Respect other trail users 
  7. Pack out at least what you pack in


  • Blind Corner
  • High Elevation
  • Hunting Area
  • Sun Exposure


  • No Commercial
  • No Open Fires
  • No Plant Sand Dirt Rock Removal
  • No Smoking

Required to Ride

Permits and liability waiver are required for all non-licensed vehicles (i.e., ATV, dirt bikes, etc.). Permits may be obtained at the Division of Forestry and Wildlife offices in Hilo (19 E. Kawili St.; 808-974-4221) or Waimea (66-1220A Lālāmilo Rd.; 808-887-6063). Permit must be in rider's possession at all times.


  • Cultural Study
  • 4-Wheel Drive
  • Nature Study
  • Open Views
  • Scenic Viewpoint
  • Sensitive Area