Length of Hike (Round Trip in miles)= Total Elevation Gain in feet = Score  Score      Difficulty Level    0 - 8 EASY 9 - 13 MODERATE 14 - 18 CHALLENGING 19 - 23 DIFFICULT 24 - 27 VERY DIFFICULT 28 + EXTREME Difficulty Level Description Return to Top Easy small children, elderly, and/or physically challenged trails are generally in very good condition generally less than 300' elevation gain generally less than 4 miles Moderate young to elderly in good hiking condition trails are generally in good condition generally less than 1000' elevation gain generally less than 6 miles Challenging teens and older in very good hiking condition trails are generally in at least fair condition generally less than 2100' elevation gain generally less than 12 miles Difficult someone in excellent hiking condition trails are generally in at least fair condition generally less than 3500' elevation gain generally less than 16 miles Very Difficult someone in exceptional hiking condition trails are not always easy to follow generally less than 4100' elevation gain generally less than 20 miles Extreme someone in exceptional hiking/climbing condition trails are not always available extreme elevation gain or extreme mileage technical aspects of hike