Our girls would never forgive us if we went caching without them. Geokid #1 is 6, and Geokid #2 is 2. We do short treks with them, and long treks. Though I must admit, that packing the 2 year old on my back is getting a little harder as she is nearing 40lbs. They love the traders, and the hunt. They love it all! A great way to get them out of doors, and enjoying the environment.