The walk was opened by former television presenter Helena McAlpine, who was first diagnosed with breast cancer in 2008.
She was joined by fellow sufferers of the disease during the event, including some women who are still in the middle of their treatment - one was in Auckland to undergo radiotherapy, another had marked eight weeks since her mastectomy by taking part.
Ms Gautier described the women as "heroic" for participating at such a difficult time in their lives.
"The camaraderie of the whole crowd is really encouraging for people, and people were cheering them on as they came back into the Domain," she said.
A preliminary count put the money raised by last night's event at $75,000, including entry fees and sponsorship money.
Ms Gautier described the total as "fantastic".