This hiking and backpacking trail has a total elevation difference of 1,721 feet, and that is about average. Sometimes this backcountry trail gets really dry, so do check for current fire restrictions before you go if you plan to bring a stove or make a camp fire. The time needed for this backcountry trek is roughly 4.5 hours, but of course some people walk a bit slower and some a bit faster. Poison Flat Trail is not that long but it's always great to bring some emergency supplies, you never know what could happen. With its 5.2 miles of walking distance it's a mid length backcountry trek. This backpacking and hiking trail goes through some very different elevations, so keep in mind that you may need to dress differently at different elevations. Poison Flat Trail has only one trailhead, so in and out is the way to trek it normally.