Runners from all over the world will converge in Raglan in December to take part in an eight-hour, 24km run up Mt Karioi.
The second annual Raglan Karioi Trail event will be held on December 13 and involves a 1850m double ascent of the mountain.
The journey is designed to challenge runners while still showcasing the beautiful Raglan landscape and views around Karioi.
According to event organiser Rachel Brown, nearly 70 people took part in the first event last year, with a increase in numbers expected this year.
"And I wouldn't be surprised if we had around 150 people this year," said Rachel.