Between 900 and 1000 cyclists will take on a 100km test of endurance from Rotorua to Taupo this weekend.
The Moa Rotorua to Taupo 100K Flyer has been alternating directions in recent years. This year was meant to be from Taupo to Rotorua but some changes in road layouts on the course forced organisers to change direction.
Event Promotions marketing manager Aimee Gregory said the change was made for safety reasons because the new entrance to Rotorua from Taupo was a single-lane roundabout.
"We just couldn't have cyclists and cars on that roundabout, for safety reasons. We assessed the situation and decided it wasn't possible," Gregory said.
Further to that, she said this would likely be the last year of the event in its current form, as organisers were looking at a new location and course for 2019.