We got a Trail-A-Bike for our 4 YO (and the family) for Christmas. We took him to the Veloway and he had a blast, other than the one fairly steep short hill-it kind of scared him. I'm pulling him with a road bike, and we look forward to doing some paid rides this spring/summer. Start him out with some 10 milers and stop for a picnic during the ride. We got a folder, which is handy when it comes to traveling w/the bikes.