Mauna Ulu Eruption
ElevationAscent: 214' 65 m
Descent: -214' -65 m
High: 3,421' 1,043 m
Low: 3,207' 977 m
GradeAvg Grade: 3% (2°)
Max Grade: 24% (13°)
Popular runs nearby
Kilauea Iki Crater Loop
3.3 mi 5.3 km • Out and Back • 472 ft Ascent 143.77 m Ascent
1.1 mi 1.8 km • Loop • 164 ft Ascent 50.11 m Ascent
Hilina Pali Overlook Loop
8.1 mi 13.1 km • Loop • 2,070 ft Ascent 631 m Ascent
Pu'u Loa Petroglyphs
1.2 mi 2.0 km • Out and Back • 17 ft Ascent 5.27 m Ascent
“Immerse yourself in a new lava landscape formed by the 1969-1974 Mauna Ulu eruption.”— Brian Smith
Harmful gases from the active eruption are often blown into this area. Wind conditions can change quickly. Infants, young children, pregnant women, and folks with cardiac or respiratory problems are especially at risk. If fumes cause physical distress, leave the area!
In the five short years of this eruption, roads, cultural sites, and coastal grasslands were burned and buried in the lavas relentless flow to the sea. A succession of flows transformed vast forests into an eerie landscape of desolate lava fields.
Today Mauna Ulu looms over this surreal landscape, where lava trees stand after the surrounding flows drained away. Step off the pavement and into the past. Re-live the 19691974 Mauna Ulu eruption and witness how this sacred Hawaiian landscape continues to undergo rapid and extraordinary change.
Start by running along the road and branch off to the south to check out the fissure. Complete the short loop before continuing along the Napau Trail to Mauna Ulu.
Run this trail?
We need help with the following missing trail information:
Flora & Fauna, Runner Notes, History & Background
Local Club: Friends of Hawai'i Volcanoes National Park
May 6, 2020: May Message from the Friends
Apr 22, 2020: Earth Day 50th Anniversary
Land Manager: National Park Service - Hawaii Volcanoes National Park