It took Heather “Anish” Anderson 60 days, 17 hours, and 12 minutes to set a speed record on the 2,650-mile Pacific Crest Trail in 2013, but the physical and emotional reckoning that followed lasted quite a bit longer. Her chronicle of that incredible feat and its fallout offers a glimpse into not only what it takes to earn a Fastest Known Time on one of the world’s most famous trails, but also what it can take out of you in the process.