Devore Creek Trail #1244 is a 15-mile, one-way backcountry route from near Weaver Point to the junction of Company Creek and 10 Mile Creek trails in Ten Mile Basin. It is not a loop or an easy out-and-back. That distance is for the named trail; if you approach from Harlequin Campground, add about 3 miles on the Stehekin River Trail before reaching the Devore Creek junction.
Treat the full route as a demanding backpacking segment or a very long one-way day. You need a plan for the far end or for retracing the route. The much-mentioned 28-mile circuit combines this trail with the Company Creek and Stehekin River trails; it is a different, longer itinerary.