What do the world’s best endurance athletes have in common? In his latest book, ‘The Way of Excellence,’ author Brad Stulberg explores the importance of positive emotions on training and racing. Courtney Dauwalter celebrating UTMB in 2023 (Photo: JEFF PACHOUD / Getty IMages) In 2023, Courtney Dauwalter made history by becoming the first person to win ultrarunning’s triple crown in a single season: the Western States 100, Hardrock 100, and Ultra-Trail du Mont Blanc (UTMB).