Locals at the triathlon by Sheet Staff in Arts and Life — 13 Jul, 2012 Mammoth resident, Dr. Mike Karch and his son, Dane, both participated in the successful sixth annual June Lake Triathlon, held on July 7. (Photo: Stayden) For full results click here. Share Topics: mammothNewssheet — Sheet Staff This story was written by multiple authors whose names are below the header at the top of the page, or by The Sheet staff.