He pulled to 30 seconds behind the race leaders before the finish.
He lost another minute and 26 seconds to the race leader.
In the time trial of stage six, Hinault won as expected, and became the race leader.
But the race leader lost 17 minutes in the final nine kilometers.
Some of the race leaders decided to pit during the caution.
Boom was therefore the first race leader, though he held the lead for only one day.
On lap 17, trouble at the back of the field became a problem for the race leader.
Most of the race leaders followed; Johnson, who was running second, just barely made it in.
He then wore the yellow jersey as the race leader for five days.
The race leader following each stage has been awarded a leader's jersey.