All three agree pain is very much a part of the challenge which takes in more than its fair share of hill climbs, including the Rimutuka Hills on the first stage to Featherstone.
"But before you get to the Rimutukas there's the Kaitoke Hill and that's short, but very steep - it's a great start to the challenge," Manson said.
"In fact, it's almost all hills, there's not many flats throughout the entire course."
The trio reflected back on last year's trek, recalling how the weather was freezing leaving Wellington on the first stage, but humid and hot by the time they c reached the northern stages.
"It was about 5C when we left to head to Featherstone, but soon warmed up over the days to be around 30C by the time we reached Hamilton," Cain said.
While the 116.41km leg from Palmerston North through to Whanganui was tough, the next morning stage to Kakatahi and on to Ohakune was worse, all three agreed.
"You might have Reed's Hill to cope with coming into Whanganui, but the ride along Fields Track to Ohakune is a gruelling climb. It's about 7km of steady climbing and it's tough," Cain said.
Meanwhile, Whanganui and national cycling treasure Ron Cheatley has been invited by TVNZ to join the event to ride the Palmerston North leg to his hometown with TV One weatherman Sam Wallace.
Wallace will be competing the entire length of the course in the corporate class and will be delivering live morning weather reports for TV One from each stopover venue.
All abilities are catered for with elite riders, competitive masters, weekend warriors, cycling tourists, and social or corporate teams competing.