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8.4 km
~2 hrs 22 min
418 m
Out and Back
The Echo Mountain via Middle Sam Merrill Trail is a 8.4 km trail that starts in Altadena, Los Angeles County, California. Based on our data, the hike is graded as Difficult. 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 hike can be completed in approx 2 hrs 22 mins. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.
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