This backpacking and hiking trail has a total elevation difference of 3,925 feet which is a higher than average number. Clear Creek National Recreation Trail is 34.8 miles long; it's considered a longer walk. Of course, this is an overnight backcountry walk, 5.5 days normally, so make sure you've got all your overnight gear packed. There is only one trailhead, so you're looking at an in and out backcountry walk. Now this wilderness trail is pretty long, so don't forget to pack enough supplies. Some parts of Clear Creek National Recreation Trail are much higher up than other parts of the great outdoors hiking trail, so keep in mind that you may need to dress differently at different elevations. Sometimes this wilderness 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.