He was then left isolated though, and with just over 20 kilometres to go, another move formed, including the dangerous Pogacar. With most teams getting a representative in the break, there were few willing participants to chase, leaving Bennett's teammate Neilson Powless - who, perhaps in a tactical blunder, was part of several breakaways during the stage - having to drop back to try and drag Bennett back into contention.
Powless was the only rider working though, and slowly the breakaway built an advantage. Van Garderen, a specialist at altitude, surprisingly left Pogacar and Max Schachmann in his wake, and while Bennett was again one of the strongest men from the main group, he could only minimise his losses on the punchy final climb.
With the next three stages unlikely to make a major difference in the general classification, Bennett may have to pin his hopes on the pivotal penultimate Mount Baldy stage, which finishes with a climb of 7.6 kilometres at an average gradient of 8.8 per cent.
However, with talented climbers such as van Garderen (36 seconds) and Pogacar (20 seconds) now holding significant time buffers over Bennett, he will need to either claw back time before that stage, or ride the climb of his life to vault back into contention to add to his 2017 overall success.
Before the race, Bennett pinpointed today's stage as one where you couldn't win the race, but you could certainly lose it.
Those words may well have proven prophetic.