Faster, Longer, Forever. The world’s first realt-ime digital coach for running and XC-skiing Racefox is fully interactive digital coach for running and XC-skiing. By combining research at the frontline from biomechanics and sports science with data science and artificial intelligence, Racefox provides personalized real-time coaching. Racefox delivers very significant performance improvements while detecting and addressing potential injuries before they happen. Racefox improves the performance of world class athletes as well as casual runners and skiers who practice to stay in shape and be healthy.