South Fork of Gibson Jack Loop is a 8.5 mile loop trail located near Downey, Idaho and is rated as moderate. The trail is primarily used for hiking, horses, and mountain biking and is accessible from March until November. Dogs and horses are also able to use this trail.
A lovely fall hike just a few miles from downtown Pocatello A nice hike from a large graveled trailhead. The Gibson Jack trail follows the creek of that name along a sage, buckbrush and juniper open sidehill with scattered pines the first mile. The sage and junipers then give way to aspen and heavier stands of pine with mountain mahogany on the ridge caps. Expect to see mule deer and other big game. A cow and calf moose watched me toil up the trail but were too shy to let me get close enough for a good picture. The trail up the canyon is very moderate but the return loop has a steep climb but is well worth the effort with ridgetop views of Pocatello, through the blackrock gap to Inkom and north to Fort Hall. The ridge leg of the trip leads through the dense pines and mountain mahogany near the crest with many rige line views.