On line Registration is now turned off. You will be able to register in person at Headlands Beach State Park, 9601 Headland Road, Mentor, Ohio starting at 06:30 am on Saturday, August 7, 2010 This is a USA Triathlon sanctioned evet for youths ranging in age from 7 - 14. The Juniors will be the 7 - 10 year olds and the seniors will be the 11 - 14 year olds.