Haleakalā National Park 4.8·Hard·29.5 km·Est. 9h 31m Supply Trail Haleakalā National Park 4.4·Moderate·7.7 km·Est. 2h 27m Holua to Palikū Haleakalā National Park 4.7·Hard·32.5 km·Est. 11h 3m Redwood, Plum, Haleakala Ridge, and Polipoli Trails Loop Kula Forest Reserve 4.6·Modera...