challenge

My wife and I were recently on a cycling vacation in Tucson, Arizona with friends.  One of the suggested rides at the local bike store was tackling the ascent of Mount Lemmon.  This sounded like a challenge but one worthy of pursuit.  We decided that our goal would be to ride halfway to the summit.  This represented an elevation change of about 3000 feet over a distance of approximately 12 miles (20 km).