In what is the final the step of a fundraising campaign for the Northland Emergency Services Trust, Markby and Flash are joined by 12 other Northlanders competing in their group.
Flash said the journey to New York has been an emotional one, after a series of fundraising "marathon" stops around Northland. "We were so blown away by people coming and giving away $100 and $200 cheques and notes [for NEST]," Flash said prior to flying to America.
"For me, so far, it has been the biggest mental and physical challenge I have ever undertaken. It started out as a personal challenge, and I had the idea 'if I can do [the marathon] then I can do anything'.
"And, from [the idea of pushing herself] has been the ability to help others through a personal challenge, with the rescue helicopter. [However], I'm looking forward to some spare time soon!"
The More FM radio host, who has never done a full marathon before, said the marathon quest was the brainchild of House of Travel owner and operator Stephen Gillingham, adding that his timing in asking her could not have been better.