Hawaii trails · Ainapo Trail
Ainapo Trail
A 9.2-mile out-and-back in Hawaii, with 6,463 ft of climbing.
Elevation profile
The climbing leans toward the first third: 45% of the ascent falls between mile 0.0 and mile 3.1. It climbs almost continuously, with little descent to recover on.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Getting there
Ainapo Trail access. 19.37719, -155.50112 · directions
Daylight at the trailhead
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 5:53 a.m., the sun rises at 6:16 a.m. and sets at 5:59 p.m., and the last usable light fades about 6:21 p.m. (HST) — 11 h 44 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 18.3-mile round trip works out to roughly 13 h 15 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.
Nearby trails
- Ka?? Desert Trail — 8.7 mi
- Mauna Loa Trail — 11.0 mi
- Kaʻaha Trail — 12.0 mi
- Hilina Pali Trail — 13.9 mi