Hike Ratings General Note: Saturday outings may take all day and last into early evening. The Sierra Club encourages carpooling to save fuel, but please be prepared to drive your own car on club outings. Easy-Less than 5 miles, no serious elevation changes, no trail obstacles. Moderate-5 to 10 miles, some elevation changes or rough trail (rock hopping), or trail obstacles such as creek crossings. Strenuous- Over 10 miles, substantial elevation change (1000 ft or more), trail may be rocky, obstructed or nonexistent. Exploratory - any event where the leader has not experienced the event, may fit any class above.