Newton Running's top-of-the-line neutral performance racer is the ultimate shoe for Natural Running. Engineered for speed, distance and performance, it is the ultimate "PR in a box." With a level platform construction and Action/Reaction Technology™, this lightweight, high mileage racer gets you to the finish line faster and with greater efficiency, quicker recovery and less overuse injuries (like achilles tendonitis and plantar fasciitis). Recommended for any distance just like its complimentary training partner, the Neutral Performance Trainer.