nytimes September 7, 2021 11:01am Ultramarathoner Scott Jurek Attempted a New Speed Record. He Faced a Reckoning. #jurekscott #ultramarathonrunning #news ‘You Can Be Defeated’: An Ultramarathoner Deals With Failure Scott Jurek set out to reclaim the supported speed record for the roughly 2,200-mile Appalachian Trail. He had his own reality check.