Directions from Makapala: Highway 240 leads off Highway 19 at Honokaa to the eastern edge of Waipio Valley. A steep, four wheel drive road extends from the lookout down into the valley. Upon reaching the valley floor, take the road to the right, then follow the beach to Wailoa Stream. The road ends at the stream. Ford the stream and follow the horse trail on the dunes to the west side of Waipio Valley and the beginning of the trail.
Muliwai Trail is a 36 mile out and back trail located near Honokaa, Hawaii and is rated as difficult. The trail is primarily used for hiking and is accessible year-round.