USA Cycling announced the tragic death of 17-year-old Magnus White, a rising star in the off-road cycling scene, on Saturday. White was preparing for the Junior Men’s Mountain Bike Cross-Country World Championships in Glasgow, Scotland when he was struck by a vehicle on a training ride near his home in Boulder, Colorado. His death has been met with an outpouring of grief from the cycling community, with USA Cycling offering its “sincerest condolences” to his family and friends.