Los Caballos is one of the longest trails in the White Mountain Trail System. source: fs.usda.gov
From downtown Show Low, drive two miles west. Turn right on State Highway 260 towards Payson/Heber. Drive 2.9 miles. After crossing Bagnal Draw, turn left on to Forest Road 136. Forest Road 136 is not marked. Drive 0.6 miles to the trailhead on the right.
http://www.singletracks.com/item.php?c=1&i=9533