This is one of the few official trail systems on the island. A series of single tracks weave in and out of ferns and tall forest. The outside loop of this ride is around 5 miles, but you can add on to your ride with various spur trails. Many of the trails are color coded with ribbons. There is not much elevation gain, but Kulani is tight, twisty and technical. The ground is rough, black lava rock. You'll also need to watch for roots. The trail can be muddy at times. To ride, a permit required from the DLNR in Hilo or Waimea. It is good for one year.