Don Boorse/Special to The Explorer, Oro Valley's Isaac Stump, at far right, pedaled in the youth triathlon.
Don Boorse/Special to The Explorer, Bonnie Diamond, 13, and Matthew Kautz stretch prior to the first leg (swimming) of the Iron Kids competition Sunday in Oro Valley. They are both students at Orange Grove Middle School.
Don Boorse/Special to The Explorer, Young swimmers stroke through the first leg of Sunday's Iron Kids competition. Swimming was followed by bicycling and running.