Green circle (easiest)Most highly-developed class of trails (almost road like) with no steep hills and few obstacles.Intended for novice riders who have mastered the basic skills necessary for safe operation on well-developed trails.Also for those lacking the experience or desire to ride more difficult trails.Approximately 10% of trails in the system should be classified as "easiest."Blue square (more difficult)Suitable for the majority of intermediate riders.More difficult trails are narrower with steeper hills and switchbacks and some moderate obstacles.Intended for OHV enthusiasts with well-developed skills seeking a reasonably challenging trail ride.Riders subjected to higher degree of risk and exposure.Approximately 80% of trails in the system should be classified as "more difficult."Black diamond (most difficult)Most primitive class of trails requiring a high-level of skill and experience.Very steep grades, narrow trails, sharp alignments, rough or loose tread surfaces, and substantial obstacles.Suitable only for proficient or expert riders to test their machines—and their own skills and abilities.Approximately 10% of trails in the system should be classified as "most difficult."
