Barguil finished in 6th position in the Liège–Bastogne–Liège one-day classic. In the mid-week leading up to "La Doyenne" he finished in 9th position in La Flèche Wallonne. Barguil finished 3rd on Stage 7 of the Tour de Suisse to Sölden, and therefore took the yellow leader's jersey before heading in to the last two stages. He lost the lead the following day however, due to his 21st position in the stage eight individual time trial. Barguil showed excellent form at the start of the Tour de France, and was 4th overall at his best in the first week. However, during the race his form dropped, and he ended up finishing 23rd overall. He went to the Olympic Games but abandoned the road race. He also abandoned the Vuelta a España on Stage 3. His best result at the fall classics was 8th at Il Lombardia.