If driving from Punahou, heading towards the mountains, turn left on Nehoa St. At the first traffic light, turn right on Makiki Street. When you reach the Board of Water supply park, follow the left fork, which is Makiki Heights Road. Continue for approximately 0.5 miles until the road makes a sharp hairpin turn to the left (look for a row of mailboxes on the right side of the road). At the hairpin turn, continue straight ahead through a green iron gate (there is a sign that says Makiki Forest Recreation Area). Continue shortly up the road till you see a gravel parking lot on your left. Parking for the trail is available in this lot. Proceed up the road on foot till you reach a stone building (public restroom) on your right. Turn right just before the building and the trail head begins right after the bridge.
Please note that the Kanealole Trail (in yellow) is part of the Honolulu-Mauka Trail Network, comprising of 18 interconnected trails (in turquoise). The system may be accessed via the Makiki Arboretum Trail (dark blue) as part of an extended hike. The shortest route from the Makiki Arboretum Trail to the Kanealole trailhead is 0.25 miles.
From the gravel parking lot continue along the paved road on foot. After passing Hawai`i Nature Center on the right, reach a signed junction. Turn right on a driveway leading to the Kanealole and Maunalaha Trails. Pass restrooms, a boot cleaning station, and a drinking fountain. Cross Kanealole Stream on a bridge and turn left upstream on a gravel path. Nearby is a bulletin board with trail information. Pass several lo`i (kalo or taro terraces) on the left. Reach another signed junction by a bench and several Cook pine. Keep left on the Kanealole Trail. (To the right is the Maunalaha Trail.) After crossing a small bridge, pass native and Polynesian introduced plants identified with labels. The trail is graveled and lined with plastic rails. Cross Kanealole Stream on a second bridge and turn right upstream. Ascend gradually next to Kanealole Stream following a partially buried water pipe. Pass a stand of bamboo and then tangled hau groves on the right. The Kanealole Trail ends at a signed junction with the Makiki Valley Trail. For a short loop hike, turn right on the valley trail. At the next junction turn right again on the Maunalaha Trail to return to your starting point.