Atwell-Hockett is a remote out-and-back from Atwell Mill Campground to Hockett Meadow. The complete mapped corridor runs 10.63 miles each way, about 21.3 miles round trip; the shorter 20-mile figure is rounded. You descend from a once-logged sequoia grove to the East Fork Kaweah, then climb through scattered giant sequoias and forested ridges to a broad subalpine meadow. Allow about 12 hours if you push through in one day. Most hikers will have a better trip as an overnight.
This is a bigger commitment than “moderate” can sound. The first stretch drops roughly 700 feet to the river, then the route climbs steadily to nearly 8,800 feet before easing down to the meadow at about 8,500 feet. Across the return, expect around 3,800 feet of cumulative climbing. A walk to the East Fork bridge and back is a worthwhile shorter outing if you do not want the full meadow route.