-Yes. Absolutely, those who suffer together bond together. Physical exhaustion, where you lean on each other for support, inspiration, and encouragement, is one of the great forms of bonding. Families and children are more than welcome to participate! Children ages 13 and over are required to register. Children 12 and under may participate but are not required to register. Only registered participants receive Free T-shirts, time-tracking, and Swag Bag. What if someone says their 14-year-old is only a 12-year-old, can they get away with it? Sure, whatever. Karma will catch up to that person.