The Tough Guy and Gal event will expand to include children.
There will be a Tough Kids series next winter for children aged five to 12, organisers Event Promotions announced yesterday.
"We have so many parents tell us that their kids have been counting down the years until they are old enough to take part, so there will be lots of happy kids out there hearing this news," said marketing manager Charlotte Pearson.
The Tough Kid events will be held on the Friday before each Tough Guy & Gal Challenge from May through to August in Rotorua, Hawkes Bay, Palmerston North, Auckland, New Plymouth and Wellington.
Dates and venues will be confirmed by October 1, with entries opening on March 1, 2014.