Infinity Trail Backyard Ultra - Les Terrils

Are you ready to face your limits? Come to the North and take on the mysterious region of the Bassin Minier, where you'll find the Infinity Trail among its black mountains, the Terrils. The rules of the Backyard Ultra are simple - you must complete 6,706 metres (4.167 miles) within an hour and use the remaining time to recover for the next lap, which must be completed hourly.