A trademark Reusser time trial. The Swiss specialist, racing on home roads, posted 29:36 at 48 km/h to win the stage by 11 seconds and turn a 55-second GC deficit into a 10-second lead. After staying patient and conceding minimal time on the punchy opening stages, she executed the ITT she had been targeting all week to seize the yellow jersey from Longo Borghini before the final mountain stage. She also moved up to second in the points classification.
- 23.7 kmFastest time of the day, 29:36 at 48.028 km/h, to win the stage and take the overall lead