Complex sentence: The first hikers to complete the trail in one continuous walk from February 27,2005 to October 15,2005, were Marcia and Ken Powers, wife and husband, of Pleasanton, California.
Split into simpler sentences: The first hikers to complete the trail in one continuous walk took from February 27,2005 to October 15,2005. They are Marcia and Ken Powers, wife and husband, of Pleasanton, California.