Being 6.6 miles long it's an average length backpacking trail. This trek shouldn't take more than 6 hours, but of course some folks walk a bit slower and some a bit faster. This trail sometimes gets very dry, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. This is a one trailhead trail, so you'll be backcountry backpacking it in and back out. The backpacking trail stays roughly within the same elevation zone the whole time, so you get pretty much the same conditions along the whole backpacking trail. Smith Creek Trail has a total elevation difference of 1,176 feet which is about average. Keep in mind that this is a long trail, so make sure you bring plenty of supplies.