After Boston, Des Linden Tries to Conquer New York

Ten miles into the Rock ’n’ Roll Philadelphia Half Marathon in September, Desiree Linden was about 50 seconds ahead of the second-place women’s finisher, Kellyn Taylor. A half-mile later, though, she touched a hand to her right side, and her flat raceday expression turned into a grimace. She slowed. She walked. She stopped.