An experienced mountain biker died Saturday while participating in the grueling Leadville 100 race in Colorado's mountains. Scott Ellis, 55, of Johnstown, Colorado, died near the end of the 100-mile, high altitude course. Ellis' Peloton-Specialized team said he apparently suffered a heart attack while competing in his favorite race, but Lake County coroner Shannon Dent would only say that he suspected natural causes in Ellis' death. More...