It will be Aaron Whitford's fourth run up the Sky Tower but he's not expecting it to be any easier.
The volunteer operational support firefighter is the sole Whanganui representative in the Firefighter Sky Tower Stair Challenge which is on this Saturday in Auckland.
Firefighters from around the country and a handful from overseas will climb 1103 steps in 51 flights of stairs, with 25kg of kit to raise money for Leukaemia & Blood Cancer New Zealand (LBC).
So far Mr Whitford, who is also a rural fire fighter, has raised about $1600 for the cause, mainly through selling raffle tickets and running bucket collections.
He has been training for six months using the Durie Hill steps. It was all worth it for the cause, he said.