You might expect the only person to even win ultrarunning’s Triple Crown would have achieved the feat thanks to a strict training plan and a coach’s guidance. Courtney Dauwalter has neither. The Guardian profiles the 38-year-old runner, who has done what no other ultrarunner has done and then some: In 2023 she won the three most challenging and prestigious 100-mile races in the world: Western States 100, Hardrock 100, and the Ultra-Trail du Mont Blanc. Kilian Jornet is the only other ultrarunner who has won all three across his career. And Dauwalter’s feats went beyond the Triple Crown in the …