Feature-length documentary Running For Good debuts online this week. The film chronicles British ultra-marathoner, a longtime vegan, and animal-sanctuary owner Fiona Oakes’ grueling 151-mile race across the Sahara Desert in Morocco. From acclaimed filmmaker Keegan Kuhn (co-creator of Cowspiracy and What The Health) and narrated by vegan ultra-athlete Rich Roll, the film follows Oakes as she endures the scorching desert heat and mountainous terrain throughout the six-day duration of Marathon Des Sables—known as the toughest foot race on the planet—running with only one kneecap, after losing the other to disease as a teenager. “I’m absolutely amazed by Fiona’s incredible athletic achievement,” Roll said, “what she has been able to accomplish, and that more people don’t know her story.” Oakes, who cares for nearly 400 animals at the Tower Hill Stable Animal Sanctuary in Asheldham, England, has made a name for herself as the fastest woman in the world to run a marathon on all seven continents and the north pole in both cumulative and elapsed time, and has set numerous marathon world and course records. The documentary will be available to stream for free from October 11 to 14 using the code, “FREE.”