If you have children between the ages of 8-18 who love the outdoors, then you may want to introduce them to the Colonial Revolution Mountain Bike Club. I have been a sponsor of this club for several years because of my personal love for mountain biking, but also because they help children of all ages develop their skills and love for the sport as well.
Excerpt from their website:
The team exists to provide student-athletes of all riding levels the guidance to ride safely in an inclusive, supportive environment, to develop an appreciation of our outdoor spaces, to achieve personal and competitive goals, and to develop the skills to maintain a healthy lifelong fitness all while building strong bodies, strong minds, and strong character.
Visit their website at https://colonialrevolutionmtb.org/about/ to learn more about this great organization. To get a feel for the training, coaching, and races involved, follow them on Instagram or Facebook.