Take the obvious spur off Outback and start climbing. You'll climb to great views out over the area extending to Lake Chelan and the mountains beyond. After the left-hand switchback, the grade steepens quite a bit before easing at a fork. Go left at the fork and continue climbing, now at an easier grade. The trail wraps around the summit and eventually ends at a rock outcropping. To descend the more steep route, retrace the trail a couple hundred yards and look for the trail off to the right. You can also ride back down the same way you came up.
Combining Mallory's, Outback, and Waterbar Heaven will give you the longest possible continuous descent at Echo Ridge.