My grandson is 6 and although we've been riding through the neighborhood whenever he comes over, he's always asking me to take him on a "real" mt bike ride.
Last Sunday after church we headed over to the regional park for a ride....nothing crazy but he had a great time....
Nothing better, who was more excited? You or him? ;)
He was pretty stoked, I of course forced everyone at work to look at the pictures and watch the videos until they were sick of it.... :-)