It will be about 102km of non-stop walking, with supporters sponsoring the men for the extreme feat.
Gerard says they have been blown away by the money raised so far.
Te Awamutu mates Ollie Ward and Gerard Dorssers will walk around Lake Ngāroto for 24 hours to raise cash for two struggling families. Photo / Hunter Calder
"We've had to move the fundraising goal post," he says.
"We were hoping to raise $6000 but so far we're heading towards $7500.
The men are fundraising for the families of 50-year-old Steve West, who has motor neuron disease, and 11-year-old Dayton Harding, who needs stem cell treatment to combat his autoimmune disease.
The men are hoping to attract a crowd of supporters at Lake Ngāroto over the weekend, with the public invited to join in on a loop around the lake on Saturday at 10am.
To make a donation, get in touch with Gerard on 027 505 4008 or Ollie on 027 290 9268 or donate to the bank account 12-3134-0093023-04.