This is a one trailhead backcountry hiking trail, so you're looking at an in and out backcountry walk. The total elevation difference for this backcountry hiking trail is 974 feet which is a lower than average number. This vicinity does get very dry sometimes, so donít forget to check for any current fire restrictions before you go. King Spruce Trail is 5.6 miles long it's an average length great outdoors trail. This wilderness trail is not that long but you should still bring some emergency supplies just in case something happens. The great outdoors trail stays roughly within the same elevation zone the whole time which means the conditions are about the same from start to finish. You should count on this backcountry walk taking about 5 hours, but of course some folks walk a bit slower and some a bit faster.