We chose North Shore Zipline as we have 4 children, two under the age of 10. This company accommodates children as young as five, and they do it with professionalism and concern for safety. The guides really make this an incredible experience. Shout out to Marty McFly, Hannibal and Hollywood. You guys rocked! They put the nervous ones of our group at ease (me!) and made it a really fun experience for all. There are seven lines in total, the first two being shorter 'trial" lines which were perfect as a way to prove that it's not scary! The final line, Top Gun, is super fast, so if you have a little child under 50 pounds, the guides will likely want to accompany your child. My youngest is just under 60 pounds and was fine on his own. A fun morning for all!