The total elevation difference for this wilderness trail is 2,410 feet which is an average number. Hemlock Lake Trail has only one trailhead, so you'll be trekking it in and back out. You should count on this trek taking about 9 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. Hemlock Lake Trail is 10.4 miles long; it's considered a longer backcountry walk. Sometimes this great outdoors trail gets really dry, so donít forget to check for any current fire restrictions before you go. This is a great outdoors trail that is quite long, so do pack enough food to last the whole trip. This great outdoors hiking trail goes through some very different elevations which of course means you need to be prepared for different conditions on different parts of the great outdoors hiking trail.