Slide Basin Trail is 7.6 miles long it's an average length wilderness hiking trail. This is a one trailhead great outdoors trail, so in and out is the way to trek it normally. Slide Basin Trail goes through some very different elevations, so keep in mind that you may need to dress differently at different elevations. You should count on this hike taking about 7 hours, but you never know stuff could go wrong and you could get stuck so be prepared for that. This is a backcountry hiking trail that is quite long, so make sure you bring plenty of supplies. Slide Basin Trail has a total elevation difference of 1,575 feet which is an average number. Sometimes this backcountry hiking 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.