There is no universal "yes" or "no" for this, as it depends on the child's development and the specific situation. Most pediatricians suggest transitioning away from strollers between ages 3 and 4 to promote independent walking and motor skill development. However, for long excursions like a day at a theme park or a walking tour of a city, a 3-year-old may lack the physical stamina to keep up, making a stroller a practical tool to prevent exhaustion and "meltdowns." Safety is the main constraint; you must check the weight limit of your specific stroller, as many are rated up to 50 lbs (22.5 kg). If your child exceeds the limit or their head surpasses the top of the seat, they have physically outgrown that model, even if they still need the rest.