Stage 15 was another mountain ITT, which was once again won by Bernard Hinault who put himself back into the yellow jersey. The majority of the ninety-something riders remaining in the race finished well beyond +5:00 of Hinault with only Zoetemelk keeping him under 3:00. Hinault's lead over 5th place Nilsson was just over 14:00, he was 13:00 ahead of 4th place Sutter, nearly 12:00 ahead of 3rd place Kuiper, but only 1:48 ahead of 2nd placed Zoetemelk, a lead he was not satisfied with going into the high mountains of The French Alps. As such Hinault went on the offensive in stage sixteen where he finished just six seconds behind Lucien Van Impe. Van Impe had a rocky start to this Tour but was slowly clawing his way back towards the top 10, even though he was always more concerned with his place within the King of the Mountains competition, not the general classification. More importantly Hinault nearly added another minute to his lead over Zoetemelk, who was now +2:45 behind, as the race headed for back to back hilltop finishes atop Alpe d'Huez following rest day. By the end of stage seventeen the 3rd place rider would be nearly +20:00 behind Hinault, but surprisingly moving all the way back to 5th place was Joaquim Agostinho who put in a masterful performance to win the stage coming all the way back from where his Tour disastrously fell apart back on the cobbles of Roubaix. Meanwhile Hinault and Zoetemelk crossed the line together some three minutes later with the two of them still separated by +2:45 and only one major mountain stage remaining.