The Unbreakable Backyard Ultra Record: A Deep Dive into Human Endurance
The Unbreakable Backyard Ultra Record: A Deep Dive into Human Endurance The backyard ultra. A deceptively simple concept: run 4.167 miles in under an hour. Repeat every hour, on the hour, until only one runner remains. This brutal format has captured the imagination of the running world, pushing athletes to the absolute limits of physical … Read more
