The Hamptons Youth Triathlon, to benefit i-tri, will be held on Saturday, July 15, from 7 a.m. to 10 a.m. at Foster Memorial Beach / Long Beach in Sag Harbor. Participants will swim 300 yards, bike 6 miles and run 1.5 miles. Open to all kids ages 10 to 17, this event is $45 with advance registration and $50 on the day of the event. For more information, please visit itrigirls.org or email info@itrigirls.org.