The Happy Isles to Merced Lake is a 12 mi
trail that starts in Yosemite Valley,
Based on our data, the trail is graded as Extra Difficult.
For information on how we grade trails, please click here.
Also, check our latest community posts for trail updates.
This trail can be completed in approx 7 hrs 49 mins. Caution is advised on trail times as this depends on multiple variables. For more info, click here.
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Avg Elevation per KM