Individuals were keen to take up the challenge to get to the top of Mount Hikurangi within an hour, he said.
If they do, they will join the elite Maui Club.
No one has managed it yet but a few athletes have signalled they're keen to break that barrier.
The course features a 20-kilometre tramp, hike or run up and down Mount Hikurangi, a 25-kilometre bicycle stage past Ruatoria and a 7km river run or sprint to the finish at Tuparoa Beach.
A novel feature of the event is the inclusion of mystery tasks for the competitors.
They can compete solo or in teams of three or five.
It is a whanau-based event, the course is achievable for first-timers and most people will come from outside Tairawhiti to compete.
Poi said about 40 percent of registrations were from Gisborne or the East Coast region.
He developed the idea four years ago when he was in the army at Linton in Manawatu.
He ran it three times as a resilience, team-building and leadership exercise.
Poi, a former Ngati Porou East Coast rugby player, said last year that the concept was too good to keep a secret.
He was keen to bring the event to East Coast people.