One of the best runs in the San Gabriels. Passes through chaparral-coated slopes with expansive canyon views, lush conifer forest and streamside woodland, sampling the grandeur of the Big Santa Anita watershed. Basically, an 1800 ft. elevation gain to Mt. Zion in the first 4 miles, and a 6 mile gradual endorphin-pumping-descent paralleling the river back to Chantry Flats.