Kelvin Davis has never walked a full marathon before but the Te Tai Tokerau MP has committed to walking 40km every day for a week to raise awareness about sexual violence.
The Seven7 hikoi, seven marathons in seven consecutive days, follows last year's Massive hikoi in which Mr Davis and others walked from Auckland to Cape Reinga in 16 days also to encourage people to speak out about sexual violence.
Mr Davis admitted he had not thought through this year's venture.
"We obviously thought through a few logistics but thought 'what the hell, you've just got to do stuff'.
"It's the cause and I've got a good pair of walking shoes, I'm sure I'll be able to last the distance," he said.