This is a one trailhead great outdoors hiking trail, so you're looking at an in and out hike. Being 21 miles long; it's a long backcountry trail. Reed Reef Trail is quite long, so do pack enough food to last the whole trip. This backcountry walk should take you about 3 days, so make sure you've got all your overnight gear packed. Sometimes this wilderness hiking trail gets really dry, so donít forget to check for any current fire restrictions before you go. This backcountry trail goes through some very different elevations, so keep in mind that you may need to dress differently at different elevations. This great outdoors hiking trail has a total elevation difference of 4,276 feet which is a higher than average number.