Ultramarathon – around a tree

In Tokyo’s western suburbs, on a riverbank, around a tree, for 54 hours and 40 minutes, 25-year-old Goshi Osada ran 10,667 laps of a 15m trail with 1m difference between its highest and lowest points, covering 100 miles (just over 160km), and climbing higher than Mount Everest and back down en route.