What are the best running trainers for kids? The best running shoes for children are ones that are designed to offer the most support and comfort. Look for a running trainer that has sufficient arch support and that fits snugly but still allows room for toes to wiggle. We recommend Asics and Saucony for some of the best running trainers for kids, however there are a wide range of options available here at Start Fitness tailored to fit children of all ages and athletic abilities. Browse through our full junior sportswear range to discover even more sporting essentials for young athletes that will help them achieve their fitness goals with ease and in style.