Hike the Mauna Loa Summit via Observatory Trail with confidence by using the HiiKER toolkit to help you before your hike and during your hike with the HiiKER app.
The Mauna Loa Summit via Observatory Trail is a 20.5 km
looped trail that starts and ends in ,
Hawaiʻi County, Hawaii.
Based on our data, the trail is graded as Medium.
For information on how we grade trails, please read measuring the difficulty of a hiking trail on hiiker.
Also, check our latest community posts for trail updates.
This trail can be completed in approx 2 days. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.
Total Elevation Gain
Total Elevation Loss
Avg Elevation per KM