Hard hiking trails in Hawaii

Hard hiking trails in Hawaii are serious half-day to full-day commitments. Long mileage, sustained climbing, and sometimes rocky or exposed terrain push these routes well past a casual outing in the volcanic Hawaiian islands.

Trail Compass currently indexes 3 hard-rated routes in Hawaii, totalling roughly 28 trail miles. The average hard trail in this state is about 9.4 miles long, which is a useful starting point when you are sketching a weekend.

Across the volcanic Hawaiian islands, the most reliable hiking season is year-round, with the drier months April through October generally most reliable on leeward slopes. Shoulder-season visits can deliver beautiful empty trails but tilt the difficulty upward — short days, possible snow, and unstaffed entry stations all add friction.

Expect wildlife typical of the volcanic Hawaiian islands: nēnē (Hawaiian goose), spinner dolphins offshore, native honeycreepers in the upper forests, and wild pigs along lower trails. The risk of a serious encounter is low, but the cost of getting it wrong is high — give animals space, store food correctly, and never approach a young animal even if no parent is visible.

How to use this page: every trail listed below links through to a full guide with distance, elevation gain, route type, best-season notes, wildlife expectations, parking guidance, and nearby attractions. Combine this filter with the Trail Compass park pages to plan a trip around a specific Hawaii destination.